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The number of d electrons in Fe^(2+) (at...

The number of `d` electrons in `Fe^(2+)` (atomic number of `Fe = 26`) is not equal to that of the.

A

p-"electrons" in Ne (At. No. = 10)

B

s-"electrons" in Mg(At. No. = 12)

C

d-electric in Fe

D

p-"electrons" in `Cl^(-)` (At. No. of Cl = 17)

Text Solution

Verified by Experts

The correct Answer is:
D
(d) `._26 Fe = [Ar]3d^6, 4s^2`
`Fe^(2+) = [Ar] 3d^6, 4s ^0`
Number of d-electrons `= 6`
`._17 Cl = [Ne]3s^2, 3 p^5`
`Cl^- = [Ne]3s^2 , 3p^6`
Number of p-electrons `= 6`.
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