1.

The ionic radius of._(57)La^(3+) is 1.06Å. Which one of the following given values will be closest to the ionic radius of ._21Lu^(3+)?

Answer»

1.06Å
1.56Å
0.85Å
1.35Å

Solution :IONIC RADIUS of `LU^(3+)` is smaller than that of `LA^(3+)`because of lanthanide contraction across the period.


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