A metal crystallises in bcc structure with edge length 4 10⁻⁸ . If density of unit cell is 10 ~g ~cm ⁻³ . What is its molar mass?

Step-by-step solution

For bec unit cell, n =2 . aligned & Density ( )= M n a ^3 ~N _ A & 10 ~g ~cm ⁻³= M 2 (4 10⁻⁸ ~cm )^3 6.022 10²³ ~mol ⁻¹ & M = 6.022 10²³ ~mol ⁻¹ (4 10⁻⁸ ~cm ^3 10 ~g ~cm ⁻³ . 2 & M=193 ~g ~mol ⁻¹ aligned