The number of possible dative bonds in the phosphoric acid molecule is

Maximum number of lone pairs is present in Lewis dot structure of which compound?

The ratio of $\sigma$ to $\mathrm{\pi }$ bonds in naphthalene is

What is true about $\mathrm{CO}$ molecule?

$\mathrm{a}.$ It has two lone pairs.

$\mathrm{b}.$ It has one dative bond.

$\mathrm{c}.$ It has two $\mathrm{\pi }$ bonds.

$\mathrm{d}.$ It has one $\mathrm{\sigma }$ bond.