Based on the compounds of group 15 elements, the correct statement(s) is (are)

A) $B{i}_2{O}_5$ is metallic oxide but $N_2{O}_5$ is non metallic oxide therefore $B{i}_2{O}_5$ is basic but $N_2{O}_5$ is acidic.

B) In $N{F}_3$ , N and F are non metals but $Bi{F}_3$ , Bi is metal but F is non metal therefore $N{F}_3$ is more covalent than $Bi{F}_3$.

C) In $P{H}_3$ hydrogen bonding is absent but in $N{H}_3$ hydrogen bonding is present therefore $P{H}_3$ boils at lower temperature than $N{H}_3$.

D)Due to small size in N–N single bond lone pair. – lone .pair. repulsion is more than P–P single bond therefore N–N single bond is weaker than the P–P single bond.