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Which of the following oxidation state s...

Which of the following oxidation state si common for all lanthanoids?

A

`+2`

B

`+3`

C

`+4`

D

`+5`

Text Solution

Verified by Experts

The correct Answer is:
B
Lanthanoids show common oxidation state of . 3+ Some of which also shown +2 and +4 stable oxidation state alongwith +3 oxidation state. These are shown by those elements which by losing 2 or 4 electrons acquire a stable configuration of `f^0, f^7 or f^14`, e.g. ,
`Eu^(2+) " is " [Xe] 4f^7, Yb^(2+)" is" [Xe]4f^14, Ce^(4+)" is " [Xe] 4f^0` and `Tb^(4f)" is " [Xe]4f^7`.
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