Question

An element (atomic mass = 100 gm/mol) having
BCC structure has unit cell edge 400 pm. The
density of element is
(1) 7.289 gm/cm3 (2) 2.144 gm/cm3
(3) 10.376 gm/cm3 (4) 5.188 gm/cm3​

Answer 1

Answer:

a = 4 * 10^-8 cm

Explanation:

d = z m/ a^3 na

= 2* 100 /  ( 4* 10^-8)^3 * 6.022*10^23

= 5.188

4 is correct option