Question

Three elements of A,B and C crystallizes into a cubic solid lattice. Atoms A occupies the corners ,B atoms, the cubic centres, and atom C, the edges ,the formula of the compound is

Answer 1

Answer:

Atom A is shared by 8 corners 1

atoms of C is shared by 4 unit cells

Atom B is present at centre of the unit cell

Hence, effective number of atoms of A per unit cell = 8× 1/8 = 1

Effective number of atoms of C per unit cell = 12/4 = 3

Effective number of atoms of B per unit cell = 1 Hence, the formula of the compound is ABC3

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