Given below are two statements: Statement I : Nitrogen has a unique ability to form p -p multiple bonds with itself and with other elements having small size and high electronegativity. Statement II : The basic strength of Group 15 hydrides increases down the group from NH₃ to BiH₃ . In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step solution

Statement I is correct. Nitrogen has a small size and high electronegativity, which allows effective overlapping of orbitals to form strong p -p multiple bonds with itself (as in N₂ ) and with other elements like carbon and oxygen. Statement II is incorrect. The basic strength of Group 15 hydrides decreases down the group from NH₃ to BiH₃ . As the size of the central atom increases down the group, the lone pair of electrons is distributed over a larger volume. This decreases the electron density on the central atom