Question

an element atomic mass 100 g/mol having bcc structure has unit cell edge 400 pm. the density of the elements is​

Answer 1

Answer:

Given, M = 100 g/mol, a = 400pm  

n=8×1/8   +1=2

As we know,

Density=  n×M /a³ ×Nₐ

             2×100/(400×10⁻¹⁰)³ ×6.02× 10²³

     

            =5.188 g cm  ⁻³

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