MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic ChemistrySolid stateNumber of neighbours
In a face centred cubic arrangement of A and B atoms when A atoms are at the corner of the unit cell and B atoms of the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of compound is
A.A7B₃
B.AB₃
C.A7B₂₄✓ Correct
D.A7/8B₃
Explanation
for fcc arrangement (A) Atoms at corner (one A is missing) (B) Atoms at faces 7 1/ 8 7 / 8 x 6 1/ 2 3 x ratio – 7 : 24 Simple formula will be 7 24 A B