The four quantum numbers of the valence electron of potassium are :

Question

The four quantum numbers of the valence electron of potassium are : (A) 4, 1, 0 and (1/2)  (B) 4, 0,1 and (1/2)  (C) 4, 0, 0 and +(1/2)  (D) 4, 1, 1, and (1/2)

Tardigrade Admin · Accepted Answer

Write the electronic configuration of potassium and then find quantum numbers of valence shell electron.

K = 19 = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{1}

∴

Valence shell electron is

4 s^{1}

∴ n = 4 l = 0 m = 0 s = \frac{1}{2}

Q. The four quantum numbers of the valence electron of potassium are :

$4, 1, 0$ and $\frac{1}{2}$

$4, 0, 1$ and $\frac{1}{2}$

$4, 0, 0$ and $+ \frac{1}{2}$

$4, 1, 1,$ and $\frac{1}{2}$

Write the electronic configuration of potassium and then find quantum numbers of valence shell electron.
$K = 19 = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{1}$
$∴$ Valence shell electron is $4 s^{1}$
$∴ n = 4 l = 0 m = 0 s = \frac{1}{2}$

Q. The four quantum numbers of the valence electron of potassium are :

4,1,0 and 21​

4,0,1 and 21​

4,0,0 and +21​

4,1,1, and 21​

Write the electronic configuration of potassium and then find quantum numbers of valence shell electron. K=19=1s2,2s2,2p6,3s2,3p6,4s1 ∴ Valence shell electron is 4s1 ∴n=4l=0m=0s=21​

$4, 1, 0$ and $\frac{1}{2}$

$4, 0, 1$ and $\frac{1}{2}$

$4, 0, 0$ and $+ \frac{1}{2}$

$4, 1, 1,$ and $\frac{1}{2}$

Write the electronic configuration of potassium and then find quantum numbers of valence shell electron.
$K = 19 = 1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p^{6}, 4 s^{1}$
$∴$ Valence shell electron is $4 s^{1}$
$∴ n = 4 l = 0 m = 0 s = \frac{1}{2}$