MgO crystallizes as rock salt structure with unit cell length 2.12 Å. From electrostatic model, the… · ABC26PH0805
Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Solid State – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Hard
MgO crystallizes as rock salt structure with unit cell length 2.12 Å. From electrostatic model, the calculated lattice energy in $\mathrm{kJ\,mol^{-1}}$ (rounded off to the nearest integer) is ____. (Given: $N_A = 6.022 \times 10^{23}\ \mathrm{mol^{-1}}$; Madelung constant = 1.748; $\varepsilon_0 = 8.854 \times 10^{-12}\ \mathrm{J^{-1}\,C^2\,m^{-1}}$; charge of an electron = $1.602 \times 10^{-19}$ C)
Answer
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