The electronic configuration of an element with atomic number`7` i.e. nitrogen atom is.

Options

A. `1 s^2, 2 s^1, 2 p._x^3`
B. `1 s^2m 2 s^2 2p^(1)._(x) 2 p^(2)._(p)`
C. `1 s^2, 2 s^2 2p^(1)._(x) 2p^(2)._(y) 2 p^(2) ._(z)`
D. `1 s^1, 2s^2 2 p^(2)._(x) 2 p^(2)._(y)`

Answer

C

Explanation

( c) `._7 N = 1 s^2, 2 s^2 2p_x^1,2 p_y^1, 2 p_z^1`. Hund's rule states that pairing of electrons in the orbitals of a subshell (orbitals of equal energy) starts when each of them is singly filled.