SSC MTS EXAM

Detailed explanation-1: -A hydrogen bond is the attractive force between the hydrogen attached to an electronegative atom of one molecule and an electronegative atom of a different molecule. Usually the electronegative atom is oxygen, nitrogen, or fluorine, which has a partial negative charge. The hydrogen then has the partial positive charge.

Detailed explanation-2: -The hydrogen is attached directly to a highly electronegative atoms, causing the hydrogen to acquire a highly positive charge. Each of the highly electronegative atoms attains a high negative charge and has at least one “active” lone pair.

Detailed explanation-3: -When polar covalent bonds containing hydrogen form, the hydrogen in that bond has a slightly positive charge because hydrogen’s one electron is pulled more strongly toward the other element and away from the hydrogen. Because the hydrogen is slightly positive, it will be attracted to neighboring negative charges.

Detailed explanation-4: -The differences in electronegativity and lone electrons give oxygen a partial negative charge and each hydrogen a partial positive charge.