MHT CET 2023 Chemistry question
Not in JEE Main or NEET syllabus
A compound made of elements A and B form fcc structure. Atoms of A are at the corners and atoms of B are present at the centers of faces of cube. What is the formula of the compound?
Answer: (C)
Solution
In a cubic unit cell a corner atom is shared by 8 cells, so contributes ; a face-centred atom is shared by 2 cells, so contributes . Atoms of A (8 corners): . Atoms of B (6 face
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