(a) 1eq. mass of the substance requires 96500 coulombs
Since the element is monoatomic, thus eq. mass = mol. Mass
6.023 × 1023 atoms require 96500C
1 atoms require (96500/6.023) x 1023C = 1.6 x 10-19C
(b) Since the element is diatomic eq.mass = (1/2) mol.mass
∴ (1/2) × 6.023 × 1023 atoms 2eq. 96500 C
=> 1 atom require = (96500 x 2)/6.023 x 1023 = 3.2 x 10-19C