Question

4. The density of iridium is 22.4 g/cm'. The
unit cell of iridium is foc. Calculate the
radius of iridium atom. Molar mass of
iridium is 192.2 g/mol. (136 pm)​

Answer 1

Givendata:

Weight of crystal=192.2 g/cm3Weight of crystal=192.2 g/cm3

Density=22.4 g/cm3Density=22.4 g/cm3

Volume of crystal=V=192.222.4Volume of crystal=V=192.222.4

V=8.58 cm3/molV=8.58 cm3/mol

In FFC, there are 4 atoms in one unit .