Question

For the type of interactions : (I) covalent bond, (II) van der Waals' forces, and (III) hydrogen bonding, which represents the correct order of increasing stability?

• A. $\left(I\right)<\left(III\right)<\left(II\right)$
• B. $\left(II\right)<\left(III\right)<\left(I\right)$
• C. $\left(III\right)<\left(II\right)<\left(I\right)$
• D. $\left(II\right)<\left(I\right)<\left(III\right)$

Answer 1

The correct option is B $\left(II\right)<\left(III\right)<\left(I\right)$

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.