The sublimation temperature of a substance is . It exist as cubic packed structure with unit cell ed — Solid State Chemistry Question

💡 Solution & Explanation

Molar mass $M = \frac{d \times N_A \times a^3}{Z} = \frac{(8/3) \times 6 \times 10^{23} \times (5 \times 10^{-8})^3}{4} = 50 \text{ g/mol}$. At $0^\circ\text{C}$ (273 K), it is a gas since it sublimes at $-83^\circ\text{C}$. Gas density = $\frac{PM}{RT} = \frac{1 \times 50}{0.0821 \times 273} \approx 2.23 \text{ g/L}$. Therefore, correct answer is C.