Calculate the molar mass of an element with density 2.7 ~g ~cm ⁻³ that forms fcc structure. [ a ^3 N _ A =40 ~cm ^3 ~mol ⁻¹ ]

Step-by-step solution

For fcc unit cell, n=4 . aligned & Density ( )= M n a^3 N_A & 2.7= M 4 40 & M= 2.7 40 4 =27 ~g ~mol ⁻¹ aligned