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The radius of La^(+) (at no 57) is 1.06Å...

The radius of `La^(+)` (at no 57) is `1.06Å`. What may be the radius of `Lu^(3+)`(at no.71)?

A

1.40Ã…

B

1.06Ã…

C

0.85Ã…

D

1.60Ã…

Text Solution

Verified by Experts

The correct Answer is:
C
`(r_(1))/(r_(2)) = (z_(2))/(z_(1))`
`r_(2) = (z_(1))/(z_(2)) xxr_(1) =(57)/(11) xx 1.06 = 0.85Ã…`
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