Question

An element having bcc geometry has atomic mass unit 50 u calculate the density of the unit cell ,if the edge length is290 pm

Answer 1

6.17 is the answer using formula d= z×m/ a^3 × Na. where z = effective no. and for bcc it is 2 ,m = molar mass which is 50 u , a= 290× 10 ^-12 and Na = 6.023 × 10 ^23