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A metal oxide crystallise in a hexagonal...

A metal oxide crystallise in a hexagonal close packed array of oxide ions with two out of every three octahedral holes occupied by metal ions.The formula of metal oxide is

A

MO

B

`MO_(2)`

C

`M_(2)O`

D

`M_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
In hexagonal closed packed array of oxide ions Let no. of oxide ions =x
`therefore`No.of octahedral holes=x
No. of octahedral holes occupied
=no. of metal ions = `(2x)/3`
No. of metal ions : No. of oxides ions `(2x)/3:x`
or 2:3
`therefore`Formula of metal oxide is `M_(2)O_(3)`.
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