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

Step-by-step solution

( 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 a n d F are non metals but B i F 3 , B i is metal but F is non metal therefore N F 3 is more covalent than B i 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 l.p. - l.p. repulsion is more than P-P single bond therefore N-N single bond is weaker