Question

In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd tetrahedral voids. The formula of the compound will be –

• A. X₃Y₄
• B. X₄Y₃
• C. X₂Y₃
• D. X₂Y

Answer 1

Answer: (B)

X₄Y₃

Answer 2

Y = ccp = 100

X = $\frac{2}{3}$ T.V. = 200 × $\frac{2}{3}$

X : Y

200 × $\frac{2}{3}$ : 100

4 : 3

X₄ Y₃