explain the condition for formation of hydrogen bond.
Answers
Answer:
1)) The molecule must contain a highly electronegative atom linked to the hydrogen atom. The higher the electronegativity, more is the polarisation of the molecule. 2))The size of the electronegative atom should be small. The smaller the size, the greater is the electrostatic attraction.
What are the Conditions for Hydrogen Bonding?
In a molecule, when a hydrogen atom is linked to a highly electronegative atom, it attracts the shared pair of electrons more and so this end of the molecules becomes slightly negative while the other end becomes slightly positive. The negative end of one molecule attracts the positive end of the other and as a result, a weak bond is formed between them. This bond is called the hydrogen bond.
As a result of hydrogen bonding, a hydrogen atom links the two electronegative atoms simultaneously, one by a covalent bond and the other by a hydrogen bond. The conditions for hydrogen bonding are:
The molecule must contain a highly electronegative atom linked to the hydrogen atom. The higher the electronegativity more is the polarization of the molecule.
The size of the electronegative atom should be small. The smaller the size, the greater is the electrostatic attraction.