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+ 4 ion of which has half-filled 4f sub...

`+ 4 ` ion of which has half-filled `4f` subshell?

A

`Nd`

B

`Tb`

C

`Sc`

D

`Tu`

Text Solution

Verified by Experts

The correct Answer is:
B
`Tb (Z = 65)` have `[Xe] 4f^(9) 5 d^(0) 6 s^(2)` configuration. `Tb^(4 +)` have half-filled `4f` subshell, i.e., `4f`
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