1.

In a face centred cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centred. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is :

Answer»

`a_(7)b_(8)`
`a_(7)b_(3)`
`ab_(3)`
`a_(7)b_(24)`

Answer :D


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