1.

A compound formed by elements A and B crystallizes in the cubic arrangement in which atoms A are at the corners of the cube and atoms B at the face centres. What is the formula of the compound?

Answer»


SOLUTION :Number of atoms of A: (8 cornes, `1/8` FRACTION), i.e., `8 x 1/8` = 1, number of atoms of B (6 faces, `1/2` fraction), i.e., `6 xx 1/2` =3
`:.` Number of cations and anions in ONE unit cell = 1 + 3 = 4. So simplest formula is `AB_3`.


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