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Ionic radii of Mg^(2+) and O^(2-) ions a...

Ionic radii of `Mg^(2+)` and `O^(2-)` ions are 66pm and 140pm respectively. The type of intersitital void and coordination number of `Mg^(2+)` ion respectively are

A

tetrahedral ,12

B

octahedral,6

C

tetradhedral,6

D

octahedral,8

Text Solution

Verified by Experts

radius ratio `(r_(Mg^(+2))/(r_(O^(2-))))=(66)/(140)=0.47`
Hence `Mg^(2+)` occupies octahedral void
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