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Gold has cubic crystal whose unit cell has an edge length of 407.9 pm. Density of gold is 19.3 g…
Gold has cubic crystal whose unit cell has an edge length of 407.9 pm. Density of gold is 19.3 g cm-3. Atomic weight of gold is 197 g mol-1. (NA = 6.02 x 1023 mol-1)
(i)
The number of atoms (Z) in a unit cell of gold is:
- (a)1
- (b)2
- (c)3
- (d)4
(ii)
The type of crystal structure of gold is:
- (a)Simple cubic unit cell
- (b)Body centred cubic unit cell
- (c)Face centred cubic unit cell
- (d)Side centred cubic unit cell
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From ISC 2022 Specimen Chemistry Paper 1, question 40.