The potential energy curve for the ${\mathrm{H}}_2$ molecule as a function of internuclear distance is:

Consider the following molecules and statements related to them:

(a) (B) is more likely to be crystaline than (A)

(b) (B) has higher boiling point than (A)

(c) (B) dissolves more readily than (A) in water

Identify the correct option from below:

The compound/s which will show significant intermolecular $\mathrm{H}$-bonding is/are :

The number of species having non-pyramidal shape among the following is:

$\left(\mathrm{A}\right) {\mathrm{SO}}_3$ 

$\left(\mathrm{B}\right) {\mathrm{NO}}_3^{-}$

$\left(\mathrm{C}\right) {\mathrm{PCl}}_3$

$\left(\mathrm{D}\right) {\mathrm{CO}}_3^{2-}$

Match List - I with List - II:

Choose the most appropriate answer from the options given below: