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The radius of `La^(+)` (at no 57) is `1.06Å`. What may be the radius of `Lu^(3+)`(at no.71)?
A. `1.6 Å`
B. `1.4 Å`
C. `1.06 Å`
D. `0.85 Å`

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Correct Answer - D
Due to lanthanide contration left to size decreases.

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