Essential University Physics: Volume 2 (3rd Edition)
Essential University Physics: Volume 2 (3rd Edition)
3rd Edition
ISBN: 9780321976420
Author: Richard Wolfson
Publisher: PEARSON
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Chapter 37, Problem 24E
To determine

The equilibrium ionic separation in LiF.

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The density of solid KCl is about 1980 kg/m3. Compute the nearest-neighbor distance in KCl, that is, the distance between neighboring K+ and Cl- ions. Note that KCl has the same lattice structure as NaCl.
The elements A and B crystallize in bcc and fcc structures, respectively. Suppose that (i) the crystals of A and B have the same density, and (ii) the nearest-neighbor distances in these crystals are equal. Calculate the ratio MA/MB, where MA and MB denote the masses of the A and B atoms, respectively.
The ionic crystal of NaCl has an fcc structure as shown below with the position of the Cl atom located at : (0 0 0); (½ ½ 0); ( ½ 0 %) and (0 ½) and Na atom is located at : (½ ½½) + fcc translation. The following are the physical data of NaCl: - Ionic radius Na = 0.98 A, Cl ion radius 1.81 A Atomic mass of Na = 22.99 amu, Atomic mass of Cl = 35.45 amu NaCl bulk modulus = 2.40 x 1010 N/m - Madelung's constant = 1.75 Young's modulus in the direction [100] = 5 x 1010 Nm-2 Debye temperature = 281 K - State the structural factors of NaCl, F in fNa and fCl (f = atomic scattering factor). Also determine the condition (h k 1) so that the value of F = 0.

Chapter 37 Solutions

Essential University Physics: Volume 2 (3rd Edition)

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