1.

A compound formed by elements X, Y and Z has a cubic structure in which X atoms are at the corner of the cube and also at alternate face centres. Y atoms are present at the body centre and Z atoms are present at the alternate edge centre. Then the molecular formula of the compound is

Answer»

`XYZ`
`XY_2 Z`
`XYZ_3`
`X_2 YZ`

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