1.

In a ccp arrangement, atoms A are present at corners and B are at face-centred. If two atoms from the corners are missing, the formula of the compound will be ..........

Answer»

`A_7B_6`
`A_6B_7`
`A_7B_24`
`AB_4`

Solution :NUMBER of A-atoms at CORNERS `= (6 xx 1/8)`
Number of B-atoms at face-centres = `(6 xx 1/2)`
RATIO of A-atoms to B-atoms in a compound
`A: B = 2 : 3 IMPLIES AB_4 `


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