Question

easy solid state mcq, need help with

Answer 1

The answer is b

1/8th part of an anion is present at eight corners of the cube as one corner atom is share by 8 cubes

Y=1/8×8=1

the X cation present on the face is shared between 2 cubes and they are at the centres of alternate faces of a unit cell

X=1/2×3=3/2

X. . Y

3/2. 1

X3Y2

I hope this helps ( ╹▽╹ )