Question

Hydrogen bonding is formed in compounds containing hydrogen and:

• A. highly electro-negative atoms
• B. highly electro-positive atoms
• C. metal atoms with d-orbitals occupied
• D. metalliods

Answer 1

The correct option is A highly electro-negative atoms

A hydrogen bond is the electrostatic attraction between polar groups that occurs when a hydrogen $\left(H\right)$ atom bound to a highly electronegative atom such as nitrogen $\left(N\right)$, oxygen $\left(O\right)$ or fluorine $\left(F\right)$ experiences attraction to some other nearby highly electronegative atom. These hydrogen-bond attractions can occur between molecules (intermolecular) or within different parts of a single molecule (intramolecular). The hydrogen bond (5 to 30 kJ/mole) is stronger than a van der Waals interaction, but weaker than covalent or ionic bonds.