What is the empirical formula? — Solid State Chemistry Question

💡 Solution & Explanation

Mn at 8 corners contributes $8 \times (1/8) = 1$ atom. F at 12 edge centres contributes $12 \times (1/4) = 3$ atoms. The ratio is 1:3, so the empirical formula is $\text{MnF}_3$. Therefore, correct answer is C.