The bond energies (in kJ `mol^(-1)`) of P-H, as-H and N-H are respectively.

Options

A. 247, 389 and 318
B. 247, 318 and 389
C. 318, 389 and 247
D. 318, 347 and 389

Answer

D

Explanation

Bond energy of hydrides `prop(1)/("Bond length")`, hence the decreasing order of bond energies is:
`N-H gt P-H gt As-H`, ie: `389 gt 318 gt 247`.