If the unit cell length of sodium chloride crystal is 600 pm, then its density will be — Solid State Chemistry Question

💡 Solution & Explanation

For $NaCl$, Z = 4, M = 58.5 g/mol, a = 600 pm = 6 × 10^-8 cm. Density ρ = (Z × M) / (Na × a³) = (4 × 58.5) / (6.022 × 10^23 × (6 × 10^-8)³) = 234 / 130.07 = 1.79 g/cm³.