Question

The outer electronic configuration of the element $Mo(Z=42)$ is:

• A. $5s^{2}4d^4$
• B. $5s^{1}4d^5$
• C. $5s^{2}5p^4$
• D. $4s^{2}3d^4$

Answer 1

The correct option is B $5s^{1}4d^5$

The electronic configuration of $Mo$ is:

$Mo$- $\left[Kr\right]4d^{5}5s^1$