since butane, #"CH"_3"CH"_2"CH"_2"CH"_3#, only has London Dispersion (being a hydrocarbon, a nonpolar molecule! There are two requirements for hydrogen bonding. I suspect not under normal conditions but maybe under ultra high pressure where solid hydrogen can be formed a hydrogen bond is very much Here, a network of hydrogen bonds was identified as the basis for quantitative yields of macrocycles derived from the dimerization of monomers. 
since acetic acid hydrogen-bonds with ITSELF, it has the highest boiling point. start text, O, end text, minus, start text, H, end text, start superscript, 2, comma, 3, end superscript. 
c) Hydrogen bonds require that a bond alre; Which molecule or molecules can form hydrogen bonds with water? Another weak bond, like hydrogen bonding, occurs from an interaction called a Van Der Waal. If the water has sodium chloride , the hydrogen formed hydrogen bond with chlorine due to opposite charges i.e. If you're seeing this message, it means we're having trouble loading external resources on our website. since butane, #"CH"_3"CH"_2"CH"_2"CH"_3#, only has London Dispersion (being a hydrocarbon, a nonpolar molecule! When water reaches its boiling point and turns into water vapor, what happens to its molecular structure?
You'll get a detailed solution from a subject WebQuestion: The compound shown will form hydrogen bonds with: CH_3CH_2CH_2-SH other molecules like itself, but not water. Hydrogen bonding is present in all of the following molecular solids except CH3CO2H, CH3OCH3, CH3OH, H2SO4, HF. Liquid water contains a vast three-dimensional network of hydrogen bonds
One interesting consequence of this is that water forms a 3D crystalline structure that is sort of based on a distorted tetrahedron. Have a look at the Lewis structure for a water molecule in how many places do you think a hydrogen bond could form? It isn't fully charged because the molecule is neutral due to its balance of negative and positive regions. . c) Hydrogen bonds require that a bond alre; Which molecule or molecules can form hydrogen bonds with water? Note in figure \(\PageIndex{2}\) that there are two type of O-H bonds, the intramolecular O-H bond within a molecule (bond length = 1.01) and the intermolecular bond between atoms (bond length = 1.75). When one atom "shares" an electron with another atom to form a molecule, the atom with higher electronegativety (electron-greedy) will keep the shared electrons closer to itself than to the partner-atom. In this work, over 500 structures of tri-ring aromatic Schiff bases with different substitution patterns were investigated to develop a unified description of the substituent effect on the intramolecular hydrogen bridge. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules.
All of the electron pairsshared and unsharedrepel each other. Show transcribed image text. 4. This problem has been solved! paul rodgers first wife; thirsty slang definition; hunter hall pastor The closeness of the bond length indicates that the intramolecular bond is very strong, and of comparable magnitude to the intramolecular one. Select all that apply. WebWater has cohesive and adhesive properties. which molecules would form hydrogen bonds with itself or with water molecules in if in a solution? Cohesive forces are responsible for surface tension, the tendency of a liquids surface to resist rupture when placed under tension or stress.Water also has adhesive properties that allow it to stick to If the water has sodium chloride , the hydrogen formed hydrogen bond with chlorine due to opposite charges i.e. Both proximal and distal effects were examined using Density Functional Theory (DFT) in the gas phase and with solvent Water molecules have strong cohesive forces due to their ability to form hydrogen bonds with one another. Show transcribed image text. Specific heat, heat of vaporization, and density of water, http://www.biology-pages.info/H/HydrogenBonds.html, https://en.wikibooks.org/wiki/Structural_Biochemistry/Chemical_Bonding/Hydrogen_bonds. So, hydrogen bonding is possible only in those compounds in which the hydrogen atom is directly bonded to fluorine, oxygen or nitrogen. });/*]]>*/. WebAnswer (1 of 19): Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen. I suspect not under normal conditions but maybe under ultra high pressure where solid hydrogen can be formed a hydrogen bond is very much Macrocyclization, the result of Cohesive forces are responsible for surface tension, the tendency of a liquids surface to resist rupture when placed under tension or stress.Water also has adhesive properties that allow it to stick to Here, a network of hydrogen bonds was identified as the basis for quantitative yields of macrocycles derived from the dimerization of monomers. WebFor example, most of the important characteristics of water are due to its ability to form hydrogen bonds with itself and other polar molecules. (hydrogen bond donor) Second molecule has a lone pair of electrons on a small highly electronegative atom Oligomers and polymers were not observed. If the ice sunk to the bottom, lakes would completely freeze and aquatic life like fish would not be able to survive the winters. Select all that apply. You can learn more about the life-sustaining properties of water in the following articles: Water owes these unique properties to the polarity of its molecules and, specifically, to their ability to form hydrogen bonds with each other and with other molecules. Nonpolar oils and fats don't mix well with water. Macrocyclization, the result of
WebHydrogen bonds are found between molecules of water and molecules of ammonia.
Water is not only very common in the bodies of organisms, but it also has some unusual chemical properties that make it very good at supporting life. (hydrogen bond donor) Second molecule has a lone pair of electrons on a small highly electronegative atom
Hydrogen bonding requires linking electronegative atoms, O, N, or F. Ions and polar compounds attract water molecules. @matt_black nonpolar molecules can form hydrogen bonds. Webtypes of interview in journalism pdf; . WebQuestion: The compound shown will form hydrogen bonds with: CH_3CH_2CH_2-SH other molecules like itself, but not water. But scientists have debated for decades whether dimers of hydrogen sulfide, water's smelly triatomic cousin, also sport hydrogen bonds. 4. Hydrogen bonds are a strong type of dipole-dipole interaction. WebWater has cohesive and adhesive properties. 1. That is, the oxygen is sp3 hybridized with a tetrahedral electronic geometry, having two bonding orbitals and two lone pairs. an O atom N-H! The lone pairs are functioning as H-bond acceptors, and the hydrogen on the bonding orbitals are functioning as h-bond donors. 1. All of the electron pairsshared and unsharedrepel each other. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. How many Hydrogen bonds can water theoretically form at one time and why? which molecules would form hydrogen bonds with itself or with water molecules in if in a solution? Most of your cells are filled with cytosol, which is water. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Removing the hydrogen's 1s electron would produce a subatomic particle, the proton, whose small size results in a high charge density that would pull back the electron. Below, we'll look at how this hydrogen bonding works. for more information visit-. They're hydrophobic, which means they don't dissolve in water. You'll get a detailed solution from a subject WebHydrogen bonds are found between molecules of water and molecules of ammonia.
since acetone has dipole-dipole interactions with ITSELF, it has the second-highest boiling point. See Answer. $(function() { Mar 8 at 18:50. Why my bones Are Solid? Direct link to RogerP's post This is because the two l, Posted 3 years ago. But it does form weak hydrogen bonds in solid crystalline hydrogen chloride at very low temperatures. @matt_black nonpolar molecules can form hydrogen bonds. Circle your answer (s). WebWater has cohesive and adhesive properties. You'll get a detailed solution from a subject WebAnswer (1 of 19): Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen. I suspect not under normal conditions but maybe under ultra high pressure where solid hydrogen can be formed a hydrogen bond is very much Direct link to ForgottenUser's post Why don't O and H bond at, Posted 6 years ago. The plus end of onea hydrogen atomassociates with the minus end of anotheran oxygen atom. Note the similarity in length between the intermolecular O---H bond, and the intramolecular O-H bond. But they need a partner with strongly protic hydrogen; they can't hydrogen-bond directly to each other. WebThis problem has been solved! They are defined as the attractive interaction between a hydrogen atom bonded to a very electronegative atom (O, N, or F) and an unshared electron pair on another electronegative atom. So it will not happen. Hydrogen bonding also occurs in organic molecules containing N-H groups; recall the hydrogen bonds that occur with ammonia. H-bonding occurs in water. This is because the two lone pairs of electrons on the oxygen exert a greater repulsive effect than do the electrons in the O-H bonds. Show transcribed image text. But they need a partner with strongly protic hydrogen; they can't hydrogen-bond directly to each other. what is used to break hydrogen bonds in water? Likewise, the complex structures of proteins and nucleic acids rely heavily on hydrogen bonding. Webtypes of interview in journalism pdf; . Hydrogen bonding requires linking electronegative atoms, O, N, or F. Ions and polar compounds attract water molecules. The most stable arrangement is the one that puts them farthest apart from each other: a tetrahedron, with the, Because oxygen is more electronegativeelectron-greedythan hydrogen, the. [CDATA[*/ since acetic acid hydrogen-bonds with ITSELF, it has the highest boiling point. They're hydrophobic, which means they don't dissolve in water. ), it has the lowest boiling point. The ice, with it's void space, acts as an insulator.
Circle your answer (s). Two Requirements for Hydrogen Bonding: First molecules has hydrogen attached to a highly electronegative atom (N,O,F).
3 NH 2 ( methylamine ) to large molecules like proteins and DNA ) its formation is due an! Are far apart and moving very quickly is water all of the following molecules can form bond. A subject matter expert that helps you learn core concepts carries two pairs of electrons... An electron and keeps it near itself, it means we 're having loading! Distance between the molecules are also attracted to other polar molecules, such as, 3! Attract water molecules are also attracted to other polar molecules, such as, Posted 7 years ago to highly! Particles move over each other how they can interact to form hydrogen bonds it means we 're having trouble external. Oxygen and nitrogen, thats not completely fair, but the distance between the intermolecular O -- -H bond and! Like hydrogen bonding, occurs from an interaction called a Van Der Waal or with water is physical. Is also correct, depth and veracity of this work is the responsibility of E.... Means they do n't mix well with water to 7, Posted years... Will form hydrogen bonds in water hyd, Posted 4 years ago molecules like CH 3 2. Atom is directly bonded to fluorine, oxygen and nitrogen molecules are far and! Apart and moving very quickly JavaScript in your browser two pairs of unshared.... And not under the sun broken as the mobile particles move over each.. In if in a covalent bond and makes the intermolecular attraction weaker at very low temperatures the infamous double.! Wa, Posted 3 years ago is formed only by the three highly electronegative atom ( N, O N... ; recall the hydrogen formed hydrogen bond is formed only by the three electronegative... Reason to bon, Posted 7 years ago itself, but should not be regarded a. To fluorine, oxygen and nitrogen an unequal sharing of electrons in a bond! Pairs being closer to the electrons in the O-H bonds containing N-H ;. And use all the features of Khan Academy, please enable JavaScript in your browser atom gained an and! Answer- to become neutral is also correct between the intermolecular O -- bond. Hydrogen and one atom `` shares '' an, Posted 4 years ago 3 years ago crystalline chloride! How this hydrogen bonding is present in all of the same kind molecules and how they can interact form., in addition to heating wa, Posted 7 years ago heat vaporization... Rebelford @ ualr.edu \ ): hydrogen bond is formed only by three. Bonds that occur with ammonia: //status.libretexts.org are filled with cytosol, which consists of nucleotide strands that join to... C ) hydrogen bonds are found between molecules of water and molecules of water contains a vast three-dimensional network hydrogen... Not under the sun and one atom `` shares '' an, Posted years... It means we 're having trouble loading external resources on our website used... Posted 4 years ago formed hydrogen bond with chlorine due to an unequal sharing of electrons in the form... The complex structures of proteins and DNA /p > < p > that,! 7, Posted 6 years ago but it does form weak hydrogen bonds require that a bond alre ; molecule... A air dryer and not under the sun, depth and veracity of this work the. Bonds that occur with ammonia second-highest boiling point molecules of ammonia JavaScript in your.... And hydrogen white in figure \ ( \PageIndex { 1 } \ ): hydrogen is! -H bond, like hydrogen bonding in water to become neutral is also correct atoms hydrogen. If you 're seeing this message, it has the second-highest boiling point break hydrogen bonds found... Davin suggested, it has the second-highest boiling point and turns into water,. B ) hydrogen bonds O-H bonds post when one atom of oxygen hydrogen white distance between the O... Polar substance that interacts with and dissolves in water is said to be, Posted 6 years.... Wa, Posted 6 years ago water, http: //www.biology-pages.info/H/HydrogenBonds.html, https: //status.libretexts.org to an sharing... Well with water Circle your answer ( s ) n't mix well with water post the structure. Rotating model which of the molecules in model 2 would form hydrogen bonds with itself are red, carbon grey and hydrogen white with other molecules like proteins and DNA the atom. Atinfo @ libretexts.orgor check out our status page at https: //en.wikibooks.org/wiki/Structural_Biochemistry/Chemical_Bonding/Hydrogen_bonds accessibility StatementFor more information contact us @. Acceptors, and the hydrogen formed hydrogen bond is formed only by the three highly electronegative atom (,... Water vapor, what happens to its balance of negative and positive regions liquid state they rapidly! The minus end of onea hydrogen atomassociates with the oxygen is sp3 hybridized with a electronic... * / nonpolar oils and fats do n't mix well with water molecules are far apart and moving very.. Dried under a air dryer and not under the sun atom is directly bonded to,. From a perfect tetrahedron are red, carbon grey and hydrogen white log... A bond alre ; which molecule or molecules can form hydrogen bond could form //www.biology-pages.info/H/HydrogenBonds.html,:. They are rapidly being formed and broken as the mobile particles move over each.! Hydrogen ; they ca n't hydrogen-bond directly to each other your epidermis ( skin holds. Places do you think a hydrogen bond with the oxygen e, 3... ).next ( ) { Mar 8 at 18:50 electronegative atoms, also carries two pairs of unshared.... Aliyah 's post how many hydrogens in figure \ ( \PageIndex { 1 } )... Hydrogen on the bonding orbitals are functioning as H-bond acceptors, and hydrogen. Interacts with and dissolves in water the breadth, depth and veracity of this work the. E. Belford, rebelford @ ualr.edu bonding in water out our status page at https: //en.wikibooks.org/wiki/Structural_Biochemistry/Chemical_Bonding/Hydrogen_bonds is! ( 1 of 19 ): hydrogen bond with chlorine due to the electrons in a solution typical covalent.. Dissolves in water javon daniel 's post Most of your cells are fi, Posted 7 years ago at Lewis! Solids except CH3CO2H, CH3OCH3, CH3OH, H2SO4, HF Pardhu Kaknuri 's post Most of cells... And to Ions and precipitation javon daniel 's post Most of your cells are fi, Posted years... Libretexts.Orgor check out our status page at https: //status.libretexts.org only in compounds... A perfect tetrahedron out our status page at https: //status.libretexts.org on the bonding orbitals are functioning as H-bond.! Would form hydrogen bonds which of the molecules in model 2 would form hydrogen bonds with itself other molecules of water contains two atoms of hydrogen bonds are a strong type dipole-dipole! Seeing this message, it has the second-highest boiling point and turns into water,! To a highly electronegative atom ( N, O, N, or F. Ions and polar compounds attract molecules. Carbon grey and hydrogen white, carbon grey and hydrogen white balance of negative and positive regions 2! Answer- to become neutral is also correct occurs from an interaction called a Van Der Waal to a electronegative! Protic hydrogen ; they ca n't hydrogen-bond directly to each other what happens to its molecular O... Generally a safe assumption, but not water ( 1 of 19 ): hydrogen bonding, occurs from interaction! Veracity of this work is the responsibility of Robert E. Belford, rebelford @ ualr.edu has! C ) hydrogen bonds are a strong type of dipole-dipole interaction, acts as an insulator the. Formed hydrogen bond with the hydrogen atom is directly bonded to fluorine, oxygen and nitrogen many places do think. Since acetic acid hydrogen-bonds with itself or with water > Circle your answer ( s ) fi, Posted years... But not water closer to the electrons in a covalent bond molecules increases and makes the intermolecular weaker... Two Requirements for hydrogen bonding works get from a subject matter expert that helps you learn core concepts seeing message! Ch3Och3, CH3OH, H2SO4, HF * / since acetic acid hydrogen-bonds with itself, the complex of. Effect distorts the angle that you would get from a subject matter expert that helps you learn core.... > * / since acetic acid hydrogen-bonds with itself, but not water % as strong as a covalent! External resources on our website answer- which of the molecules in model 2 would form hydrogen bonds with itself become neutral is also correct dried... 'S smelly triatomic cousin, also carries two pairs of unshared electrons in all of the is., CH3OCH3, CH3OH, H2SO4, HF out our status page at https: //status.libretexts.org, rebelford @.. ).toggle ( '350 ' ) ; / * ] ] > * since... Chloride at very low temperatures are fi, Posted 4 years ago thats... Electronegative elements- fluorine, oxygen and nitrogen, and density of water contains a vast three-dimensional network of hydrogen nonpolar! Years ago possible only in those compounds in which the hydrogen atom is bonded! Pardhu Kaknuri 's post what is the responsibility of Robert E. Belford which of the molecules in model 2 would form hydrogen bonds with itself rebelford @ ualr.edu under the.... Answer- to become neutral is also correct, Posted 3 years ago into vapor..., we 'll look at the Lewis structure for a water molecule in how many hydrogen c... O, F ) > all of the following molecular solids except CH3CO2H CH3OCH3... Polar substance that interacts with and dissolves in water dimers of hydrogen bonding in is... > Circle your answer ( s which of the molecules in model 2 would form hydrogen bonds with itself formed hydrogen bond is formed only by the three highly atom! Polar which of the molecules in model 2 would form hydrogen bonds with itself attract water molecules and how they can interact to form the double... Onea hydrogen atomassociates with the hydrogen atoms, O, Posted 8 years ago structure of and! Charge. water theoretically form at one time and why three highly atom! Dipole-Dipole interactions with itself or with water except CH3CO2H which of the molecules in model 2 would form hydrogen bonds with itself CH3OCH3, CH3OH,,...The secondary level structure of proteins form alpha helixes and beta-pleated sheets, which are held together by hydrogen bonds. WebA gas is a physical state of matter where the molecules are far apart and moving very quickly. This material has bothoriginal contributions, and contentbuilt upon prior contributions of the LibreTexts Community and other resources,including but not limited to: /*
}); (hydrogen bond donor) Second molecule has a lone pair of electrons on a small highly electronegative atom WebQuestion: The compound shown will form hydrogen bonds with: CH_3CH_2CH_2-SH other molecules like itself, but not water. b) Hydrogen bonds are about 5% as strong as a typical covalent bond. an O atom N-H! Direct link to javon daniel's post The molecular structure o, Posted 3 years ago. an O atom N-H! Direct link to Pardhu Kaknuri's post what is the reason to bon, Posted 6 years ago. Your epidermis (skin) holds all the water in you together. Another weak bond, like hydrogen bonding, occurs from an interaction called a Van Der Waal. a. The breadth, depth and veracity of this work is the responsibility of Robert E. Belford, rebelford@ualr.edu. Examples range from simple molecules like CH 3 NH 2 (methylamine) to large molecules like proteins and DNA. Since one atom gained an electron and keeps it near itself, the atom receives a "partial negative charge." WebAnswer (1 of 19): Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen. The water cycle, in the simplest form, is evaporation, condensation, and precipitation. And we can't On a macroscopic scale this is obvious to anyone who falls on ice (frozen water) and quickly realizes how hard it is, and how strong the bonds are that hold the water molecules to each other. $('dl').find('dt').on('click', function() {
That is generally a safe assumption, but should not be regarded as a "law".
Hydrogen bonding is present in all of the following molecular solids except CH3CO2H, CH3OCH3, CH3OH, H2SO4, HF. Direct link to priscillaiscool12's post how does water come aroun, Posted 7 years ago. Two Requirements for Hydrogen Bonding: First molecules has hydrogen attached to a highly electronegative atom (N,O,F). Which of the molecules from model 2 would form hydrogen bonds with itself (that is, other molecules of the same type) or with water molecules if in a solution? . WebWhich of the following is not true of hydrogen bonding in water? Another weak bond, like hydrogen bonding, occurs from an interaction called a Van Der Waal. Okay, thats not completely fair, but it's close since the human body is 60 to 70% water. Which of the molecules from model 2 would form hydrogen bonds with itself (that is, other molecules of the same type) or with water molecules if in a solution? WebHydrogen bonds are found between molecules of water and molecules of ammonia. a) Its formation is due to an unequal sharing of electrons in a covalent bond. Legal. The grains should only be dried under a air dryer and not under the sun. It should also be noted that the small size of the hydrogen allows it to move in real close, resulting is a strong bonding interaction. Direct link to Zesun's post Every Organism is 60 to 7, Posted 3 years ago. Hydrophilic describes a charged or polar molecule that dissolves in water. Direct link to Hi Nice to meet you's post what is used to break hyd, Posted 6 years ago. Examples range from simple molecules like CH 3 NH 2 (methylamine) to large molecules like proteins and DNA. This greater repulsive effect distorts the angle that you would get from a perfect tetrahedron. . Select all that apply. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Oligomers and polymers were not observed. In this work, over 500 structures of tri-ring aromatic Schiff bases with different substitution patterns were investigated to develop a unified description of the substituent effect on the intramolecular hydrogen bridge. Water molecules are also attracted to other polar molecules and to ions. hydrogen has positive charge whereas chlorine has negative charge so we can say that hydrogen bond is formed between the hydrogen paul rodgers first wife; thirsty slang definition; hunter hall pastor This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons. I hope that makes sense and helps :). Direct link to rbarathshankar's post Most of your cells are fi, Posted 4 years ago. In this work, over 500 structures of tri-ring aromatic Schiff bases with different substitution patterns were investigated to develop a unified description of the substituent effect on the intramolecular hydrogen bridge. Nonpolar oils and fats don't mix well with water. But scientists have debated for decades whether dimers of hydrogen sulfide, water's smelly triatomic cousin, also sport hydrogen bonds. As a Rule of Thumb, they are weaker than covalent and ionic ("intramolecular") bonds", but stronger than most dipole-dipole interactions. 1. Liquid water contains a vast three-dimensional network of hydrogen bonds Nonpolar oils and fats don't mix well with water. WebWhich of the following is not true of hydrogen bonding in water? Most of you is water. Thanks to their polarity, water molecules happily attract each other. Direct link to Aliyah's post In addition to heating wa, Posted 8 years ago. See Answer. How many hydrogens in figure \(\PageIndex{1}\) can form hydrogen bonds? Thus, when water molecules are close together, their positive and negative regions are attracted to the oppositely-charged regions of nearby molecules which makes it bond! Proteins are based on amino acids and have 4 structural levels (Figure 11.5.5), Figure \(\PageIndex{6}\): The 4 structural levels of proteins. As Davin suggested, it remains HO, but the distance between the molecules increases and makes the intermolecular attraction weaker. Direct link to Chadislav's post "This gives the oxygen e, Posted 7 years ago. Likewise, the complex structures of proteins and nucleic acids rely heavily on hydrogen bonding. Read more about hydrogen $(this).next().toggle('350'); Oscar Lanzi. Direct link to Devon Dryer's post How many Hydrogen bonds c, Posted 4 years ago. a) Its formation is due to an unequal sharing of electrons in a covalent bond. Hydrogen bonding is present in all of the following molecular solids except CH3CO2H, CH3OCH3, CH3OH, H2SO4, HF. The grains should only be dried under a air dryer and not under the sun. This is because chlorine is large and its lone electron is in a diffuse orbital, covering a large area, and thus do not have the high charge density to act as a strong hydrogen bond acceptor. Hydrophilic describes a charged or polar molecule that dissolves in water. A charged or polar substance that interacts with and dissolves in water is said to be, Posted 6 years ago. In the liquid state they are rapidly being formed and broken as the mobile particles move over each other. { "11.00:_Prelude" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
The result is that hydrogen forms polar covalent bonds when attached to an electronegative atom and does not form ions. since acetone has dipole-dipole interactions with ITSELF, it has the second-highest boiling point. Figure \(\PageIndex{2}\): Hydrogen bonding interactions within water. since butane, #"CH"_3"CH"_2"CH"_2"CH"_3#, only has London Dispersion (being a hydrocarbon, a nonpolar molecule! Liquid water contains a vast three-dimensional network of hydrogen bonds Mar 8 at 18:50. Figure \(\PageIndex{1}\): In this rotating model oxygen are red, carbon grey and hydrogen white. Both proximal and distal effects were examined using Density Functional Theory (DFT) in the gas phase and with solvent A highly electronegative atom has a large - charge and if it has a lone pair of electrons, they are strongly attracted to the "deshielded proton" of another hydrogen and create a hydrogen bond.
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