The electron affinity of nitrogen is lower than that of carbon because

Options

A. atomic radius of nitrogen is lower than that of carbon
B. effective nuclear charge in carbon is greater
C. addition of an electron in N gives `2p^4` configuration
D. nitrogen is gaseous element

Answer

C

Explanation

In nitrogen, the 2p subshell is exactly half-filled which imparts stability, one more or less electron makes the electron distribution unsymmetrical and destabilizes the electron distribution.