Question

A compound formed by elements p and q crystallizes in a cubic lattice, where p atoms are at the corners and q atoms are at the body centre and alternate face cnetreas of the cube.formula of the compound

Answer 1

$P_{2} Q_{5}$ would be the formula of the compound.

Explanation:

Given,

Elements P and Q,

P element is at corners. so,

1 P atom = 8 * 1/8

Q is at the center. So,

Q atom = 1

Total faces = 6

As we know, Q is at every alternate face = 3 faces

Each face contains a sharing of 2 unit cell

∵ Faces from Q = 3 * 1/2

Total Q = 1 + 3/2

= (2 + 3)/2

= 5/2

∵ Formula of the compound = $PQ_{5/2}$

or

$P_{2} Q_{5}$

Learn more: Formula of the compound

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