The correct set of four quantum numbers for the outermost el... | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

The correct set of four quantum numbers for the outermost electron of sodium ( $Z = 11$ ) is

A

$3,1,0,\frac {1}{2}$

B

$3,1,1,\frac {1}{2}$

C

$3,2,1,\frac {1}{2}$

D

$3,0,0,\frac {1}{2}$

Answer

$3,0,0,\frac {1}{2}$

Explanation

Solution

$_{11}{ Na} =1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}$

For $3 s^{1}$ ,

$n=3,$
$l=0,$
$m=0,$
$s=\frac{1}{2}$