An oxygen atom has a total of eight electrons. The correct set of four quantum numbers for the eighth electron of oxygen is

Options

A. `(2,1,-1,-1//2)`
B. `(2,1,0,-1//2)`
C. `2,1,1,-1//2)`
D. `(2,1,o, or +-1, -1//2)`

Answer

D

Explanation

The orbital diagram of oxygen atom is as follows:

The placement of the eighth electron in the subshell is completely orbitary. Thus, it would be equally correct to assign it to `m_(l) =- 1`or `m_(l) = 0` or `m_(l) =+1`.