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Arrange Ce^(3+), La^(3+), Pm^(3+) and Yb...

Arrange `Ce^(3+), La^(3+), Pm^(3+) and Yb^(3+)` in increasing order of their ionic radii

A

`Yb^(3+) lt Pm^(3+) lt Ce^(3+) lt La^(3+)`

B

`Ce^(3+) lt Yb^(3+) lt Pm^(3+) lt La^(3+)`

C

`Yb^(3+) lt Pm^(3+) lt La^(3+) lt Ce^(3+)`

D

`La^(3+) lt Ce^(3+) lt Yb^(3+) lt Pm^(3+)`

Text Solution

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The correct Answer is:
A
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