Question

A cubic solid is made up of two elements $X$ and $Y$ Atoms of $X$ are present on every alternate corner and one at the enter of cube $Y$ is at $\frac{1}{3} td$ of the total faces The empirical formula of the compound is

• A. $X _2 Y _{1.5}$
• B. $X _{2.5} Y$
• C. $XY _2, 5$
• D. $X _{1.5} Y _2$

Answer 1

Answer: (B)

$X _{2.5} Y$

Answer 2

X4x81​+1×11​Y6×31​×21​​
⇒X21​+1​Y1​
⇒X32​​Y1​
⇒X1.5​Y1​
⇒X3​Y2​