The ratio of specific charge () of a proton to that of an -particle is: — Atomic Structure Chemistry Question

💡 Solution & Explanation

Specific charge is $e/m$. For a proton, $e/m = 1/1 = 1$. For an $\alpha$ -particle ($He^{2+}$), $e/m = 2/4 = 0.5$. Ratio = $1 : 0.5 = 2 : 1$.