Question

The cubic unit cell structure of a compound containing cation $M$ and anion $X$ is shown below When compared to the anion, the cation has smaller ionic radius Choose the correct statement(s)

• A. The empirical formula of the compound is $M X$
• B. The cation $M$ and anion $X$ have different coordination geometries
• C. The ratio of $M-X$ bond length to the cubic unit cell edge length is $0.866$
• D. The ratio of the ionic radii of cation $M$ to anion $X$ is $0.414$

Answer 1

Answer: (A), (C)

The empirical formula of the compound is $M X$

Answer 2

(A) The empirical formula of the compound is $M X$
(C) The ratio of $M-X$ bond length to the cubic unit cell edge length is $0.866$