The ratio of specific charge () of a proton to that of an -particle is: — Atomic Structure Chemistry Question
Question
The ratio of specific charge ($e/m$) of a proton to that of an $\alpha$ -particle is:
Answer: A
💡 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 = $1 : 0.5 = 2 : 1$.
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