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CGP EDU Academic Team
Published on: August 14, 2026
A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is 8 g cm -3 , then the number of atoms present in 256 g of the crystal is N x 10 24 . The value of N is
Text Solution
Verified by ExpertsThe correct answer is:
2
(2)
M = 76.8gmol -1
76.8 g contain = 6 x 10 23 atoms
256 g will contain = 20 x 10 23 atoms
= 2 x 10 24 atoms
N = 2
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