1.

In a cubic packed structure of mixed oxides , the lattice is made up of oxide lois one fifth of retrahedral voids are occupied by cation of a while one half of the formula of the oxide is

Answer»

`X_(5)Y_(4)O_(10)`
`X_(4)Y_(5)O_(10)`
`XY_(2)O_(4)`
`X_(2)Y_(4)`

ANSWER :B


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