Which of the following statements about Hydrogen bond incorrect?a)In h...
In hydrogen bonding H atom becomes partially negative and is attracted to the more positive N atom.RETAKEMORE
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Which of the following statements about Hydrogen bond incorrect?a)In h...
Hydrogen Bonding
Introduction:
Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is attracted to an electronegative atom, such as oxygen, fluorine, or nitrogen. This bond is not as strong as a covalent bond but is stronger than other intermolecular forces like dispersion forces or dipole-dipole interactions.
Explanation of Incorrect Statement:
The incorrect statement is option 'D', which states that in hydrogen bonding, the hydrogen atom becomes partially negative and is attracted to the more positive nitrogen atom. This statement is incorrect because in hydrogen bonding, the hydrogen atom becomes partially positive and is attracted to the more negative electronegative atom.
Correct Statements:
To understand why option 'D' is incorrect, let's examine the correct statements about hydrogen bonding:
a) In hydrogen bonding, the hydrogen atom becomes partially positive and is attracted to the more negative oxygen atom:
When hydrogen is bonded to a highly electronegative atom like oxygen, the shared electrons are pulled more towards the oxygen, creating a partial negative charge on the oxygen atom. This leaves the hydrogen atom partially positive, and the electrostatic attraction between the partially positive hydrogen and the partially negative oxygen forms a hydrogen bond.
b) In hydrogen bonding, the hydrogen atom becomes partially positive and is attracted to the more negative fluorine atom:
Similar to oxygen, fluorine is also highly electronegative. When hydrogen is bonded to fluorine, the hydrogen atom becomes partially positive, and the fluorine atom becomes partially negative. The partial positive charge on hydrogen is attracted to the partial negative charge on fluorine, resulting in a hydrogen bond.
c) In hydrogen bonding, the hydrogen atom becomes partially positive and is attracted to the more negative nitrogen atom:
Nitrogen is moderately electronegative, and when hydrogen is bonded to nitrogen, the hydrogen atom becomes partially positive. The nitrogen atom, in turn, becomes partially negative. The partially positive hydrogen is attracted to the partially negative nitrogen, leading to the formation of a hydrogen bond.
Conclusion:
Hydrogen bonding is a unique type of intermolecular force that occurs between a hydrogen atom and an electronegative atom like oxygen, fluorine, or nitrogen. The incorrect statement in this question is option 'D', which suggests that the hydrogen atom becomes partially negative and is attracted to the more positive nitrogen atom. In reality, the hydrogen atom becomes partially positive and is attracted to the more negative electronegative atom.
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