ratio of a particle of charge 2 unit and mass 4 amu is — Atomic Structure Chemistry Question

💡 Solution & Explanation

Charge $q = 2 \times 1.6 \times 10^{-19}$ C. Mass $m = 4 \text{ amu} = 4 \times 1.66 \times 10^{-27}$ kg. Ratio $q/m = \frac{2 \times 1.6 \times 10^{-19}}{4 \times 1.66 \times 10^{-27}} \approx 4.8 \times 10^7$ C/kg. Therefore, correct answer is A.