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Predict coordination umber of the cation...

Predict coordination umber of the cation in crystals of the following compounds :
`(1). MgO:r_(c)=0.65Å, r_(a)=1.40Å`
`(2). MgS:r_(c)=0.65Å, r_(a)=1.84Å`

A

6,4

B

4,6

C

3,4

D

6,8

Text Solution

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The correct Answer is:
A
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