For the same electronic transition in the following atom or ion, the frequency of the emitted radiat — Atomic Structure Chemistry Question

💡 Solution & Explanation

The frequency of emitted radiation $\nu$ is proportional to $Z^2$. Among H ($Z=1$), D ($Z=1$), $\text{He}^+$ ($Z=2$), and $\text{Li}^{2+}$ ($Z=3$), the $\text{Li}^{2+}$ ion has the highest atomic number and will emit the highest frequency. Therefore, correct answer is D.