Among the following statements which one is incorrect?

Options

A. Nitrogen has the ability to form propre bonds with itself.
B. Bismuth forms metallic bonds in elemental state
C. Catenation tendency is higher in nitrogen when compared with other elements of the same group
D. Nitrogen has higher first ionization enthalpy when compared with other elements of the same group.

Answer

D

Explanation

The oxidation state can be calculated as
`H_4P_2O_5 " "H_4P_2O_6`
`+4 + 2x + 5(-2)=0 " " +4+2x + 6(-2)=0`
`2x-6=0 rArr x = +3 " " 2x-8 = rArr x = + 4`
`H_4P_2O_7`
`+4+2x + 7(-2)=0`
`2x-10 = 0 rArr 2x = 10 rArr x = +5`