First slide

Electronic configuration and Atomic , physical properties

Question

The number of unpaired electrons present in the first excited state of chlorine atom is

Easy

A

1
B

3
C

5
D

2

Solution

First excited state electronic configuration of Cl…
1s² 2s² 2p⁶ 3s² $3 p_{x}^{2} 3 p_{y}^{1} 3 p_{z}^{1} 3 d^{1}$ …it has 3 unpaired electrons.

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