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A crystalline solid is made up of elemen...

A crystalline solid is made up of elements A, B & C. It has a cubical crystal structure. Unit cell of the solid has atoms of A at its corners, an atom of B at its body centre, and atoms of C at its edge centres. In the unit cell-

A

number of A atoms = number of B atoms

B

number of B atoms = number of C atoms

C

ratio of number of atoms of A, B and C = 1 : 1 : 1

D

ratio of number of atoms of A, B and C = 1 : 1 : 3

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The correct Answer is:
A, D
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