Question

Given is the electronic configuration of element X :

K L M N

2 8 11 2

The number of electrons present with $\mathcal{l}$ = 2 in an atom of element X is :

• A. 3
• B. 6
• C. 5
• D. 4

Answer 1

Answer: (A)

3

Answer 2

X23 : 1s2 2s2 2p6 3s2 3p6 3d3 4s2.

No. of electron with $\mathcal{l}$ = 2 are 3 (3d3)