Question

Palladium forms a face-centered cubic lattice, and a palladium atom is 274 pm in diameter. Calculate the density of palladium.

Answer 1

$Radius = 274÷2=137pm$

$1.37×10^{-8}=\frac{1.732×a}{4}$

$a=3.16×10^{-8}$

$Volume= [3.16×10^{-8}]^3=3.155×10^{-23}$

Density $=\frac{2×106}{6.023×10^{23}×3.155×10^{-23}}=11.16g/cm^3$