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A cubic unit ...

Question

A cubic unit cell contains manganese ions at the corners and fluoride ions at the centre of each edge. What is the co-ordination number of the Mn ion ?

A

12

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B

8

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C

6

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D

4

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Solution

The correct option is C $6$
Mn ion is surrounded by 6 fluoride ions. So the co-ordination number of Mn is 6.

Hence the correct option is 3

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