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Which of the following oxides have rock ...

Which of the following oxides have rock salt structure with coordination number `6 : 6` ?

A

`BeO`

B

`MgO`

C

`CaO`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B, C
`BeO` has radius ratio `{(Be^(2+))/(O^(2-))=0.22}`
It has coordination number `=4`
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