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Electronic Configuration

Number of unp...

Question

Number of unpaired electrons in $F e^{+ 3}$ ion is :

A

1

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B

2

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C

3

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D

5

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Solution

The correct option is D 5
$F e = [A r] 3 d^{6} 4 s^{2}$ refer IMAGE $01$
$F e^{+ 3} = [A r] 3 d^{5}$ refer IMAGE $02$
Number of unpaired electrons in $F e^{+ 3}$ is $5$

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