Chemistry, asked by Dasrupsa3796, 1 year ago

1) sodium crystallises in a body centred cubic unit cell. what is the approximate number of unit cells in 4.6g of sodium? given that the atomic mass of sodium is 23g/mol.

Answers

Answered by JohnCena02
52
Atomic mass of sodium = 23 g

This means, 23 g of sodium contains 6.023 x 10^23 atoms

Therefore, 4.6 G of sodium contain (6.023 x 10^23)(4.6)/23 = 1.20 x 10^23 atoms



Now, number of atoms in a unit cell of bcc structure = 2

Therefore,

the number of unit cells which contain

= 6 x 10^22 unit cells.
Similar questions