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Orbital Diagrams

The number of...

Question

The number of unpaired electrons in phosphorous atom (Z=15) is:

A

1

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B

6

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C

5

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D

3

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Solution

The correct option is D 3
Atomic number of P=15,
electronic configuration= $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p_{x}^{1} 3 p_{y}^{1} 3 p_{z}^{1}$
Total number of unpaired electrons =3

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