The number of d-electron in `Fe^(2+) (Z=26)` is not equal to the number of electron in which one of the following?

Monjur Alahi

The number of d-electron in `Fe^(2+) (Z=26)` is not equal to the number of electron in which one of the following?
A. d-electron in Fe (Z=26)
B. p-electron in Ne (Z=10)
C. s-electron in Mg(Z=12)
D. p-electrons in Cl(Z=17)


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Salim Ahmed Kawsar

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Correct Answer - D
`Fe^(2+)` ion has six 3d electrons. D-electron in Fe(Z=26)=6
p-electrons in Ne(Z=10)=6
s-electrons in Mg in Mg(Z=12)=6
p-electrons in Cl(Z=17)=11
d is the correct answer

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