How many unit cells are present in a cubic shaped ideal crystal of NaCl of mass 1.00g [ Atomic masses : Na = 23, Cl = 35.5]
a. 2.57 x 10 21 unit cells
b. 5. 14 x 1021 unit cells
c. 1.28 x 10 21 unit cells
d. 1. 71 x 1021 unit cells
Ans. a
(5)
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