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In a metal oxide, oxide ions crystallise...

In a metal oxide, oxide ions crystallises in CCP lattice in which metal M occupies 50% of octahedral voids and metal `M_2` occupies 12.5% of tetrahedral voids. then the oxidation state of metal `M_1 and M_2` respectively are:

A

`+2 , + 4`

B

`+ 1, + 3`

C

`+ 3, + 1`

D

`+ 4, + 2`

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