Question

The electronic configuration of $C{r}^{3+}$ is

• A. $[Ar]3d^{5}4s^1$
• B. $[Ar]3d^{2}4s^1$
• C. $[Ar]3d^{3}4s^{\circ }$
• D. $[Ar]3d^{4}4s^2$

Answer 1

Answer: (C)

$Cr(24):[Ar]3d^{5}4s^1$

$C{r}^{3+}:[Ar]3d^{3}4s^{\circ }$