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Coordination Number

The radius of...

Question

The radius of calcium ion is $94$ pm and of an oxide ion is $146$ pm. The coordination number of calcium is ...........

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Solution

As per formula,
$R a d i u s = \frac{R a d i u s o f c a t i o n}{R a d i u s o f a n i o n}$
$= \frac{94}{146}$
$= 0.643$
Since the value is between 0.414 - 0.732 hence the coordination number will be 6.

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Similar questions

The radius of a calcium ion is 94 pm and of an oxide ion is 146 pm. Predict the crystal structure of calcium oxide.

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