Question

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

• A. 3
• B. 2
• C. 1
• D. 4

Answer 1

Answer: (A)

3

Answer 2

$Cr^{3+}$ has configuration $3d^3\, 4s^0$