1.

In a fcc lattice, atom A occupies the corner positionsand atom B occupies the face centred position. If one atom of B is missing from one of the face centred points, the formula of the compound is

Answer»

`A_2B`
`AB_2`
`A_2B_3`
`A_2B_5`

SOLUTION :`{:("ATOM A","Atom B"),(Z=8xx1/8=1 , Z=5xx1/2=5/2):}`
`rArr A:B=1:5/2 rArr` 2:5
So, formula of COMPOUND will be `A_2B_5`


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