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Which of the following lathanoid ions is...

Which of the following lathanoid ions is diamagnetic (At. Nos. Ce=58, Sm=62, Eu=63, Yb=70)-

A

`Eu^(2+)`

B

`Yb^(2+)`

C

`Ce^(2+)`

D

`Sm^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Sm^(2+)(Z=62):[Xe]4f^(6)`
`Yb^(2+)(Z=90):[Xe]4f^(14)`
`Ce^(2+)(Z=58):[Xe]4f^(1)5d^(1)`
`Eu^(2+)(Z=63):[Xe]4f^(7)`
Owing to the absence of unpaired electron. `Pb^(2+)` is diamagnetic in nature.
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CHHAYA PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ENTRANCE QUESTION BANK
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  2. Which contains no pi-bond-

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  4. Which of the following is paramagnetic-

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