If A is the atomic mass number of an element, N is the Avogadro number and a is the lattice parameter, then the density of the element, if it has bcc crystal structure, is
Answer & explanation
Correct answer: option 2
$d=\frac{Z×A}{N×a^3}$
For bcc, Z = 2
$d=\frac{2A}{Na^3}$