Question

Give the formula of compound.
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Answer 1

Answer:

Formula of compound = X₂Y3

Explanation:

Given: Atoms of element Y form hcp structure. Atoms of element X occupy 1/3rd of tetrahedral voids

To find: Formula of the compound

Calculation: The atoms of element Y form hcp structure.

The number of tetrahedral voids generated is

twice the number of Y atoms.

Thus, number of tetrahedral voids = 2Y

The atoms of element X occupy (1/3) of these tetrahedral voids.

Hence, number of X atoms =

$2Y \times \frac{1}{3} = \frac{2}{3} Y$

Ratio of X and Y atoms =

$Y: 1Y = \frac{2}{3} : 1 = 2:3$

Therefore Formula of compound = X₂Y3

Answer 2

Answer:

Thus

formula of compound is

X2Y3