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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)

5/5 - (1 vote)

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