Q. The orbital configuration oi $_{24} C r$ is $3 d^{5} 4 s^{1}$ . The number of unpaired electrons in $C r^{3 +} (g)$ is

2572 237 Structure of Atom Report Error

A

3

45%

B

2

19%

C

1

21%

D

4

15%

Solution:

$C r^{3 +}$ has configuration $3 d^{3} 4 s^{0}$