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The radius of La^(3+)(Z=57) is 106 pm. W...

The radius of `La^(3+)(Z=57)` is 106 pm. Which one of the following given values will be closest to the radius of `Lu^(3+)(Z=71)`?

A

1.06Å

B

1.56Å

C

0.85Å

D

1.35Å

Text Solution

Verified by Experts

The correct Answer is:
D
Ionic radius of `Lu^(3+)` is smaller than that of `La^(3+)`because of lanthanide contraction across the period.
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