Calculate the packing efficiency and density of sodium chloride from the follwoing data radiuss of sodium ion radious of chloride ion 0.98 angstrom atomic 22.99 amu
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Solution The unit cell structure of NaCI is shown in Fig. 3.18. We can see that the Na+ and Cl- ions touch along the cube edges. ••• Lattice parameter, a = 2 (radius of Na+ + radius of C1-) = 2(0.98 + 1.81) = 5.58 A Volume of ions present in the unit cell
Atomic Packing Fraction
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