Total number of spectral lines in the UV region, during transition from the 5th excited state to the — Atomic Structure Chemistry Question

💡 Solution & Explanation

The 5th excited state is $n=6$, and the 1st excited state is $n=2$. Since the transitions end at $n \ge 2$, no lines will fall in the Lyman series ($n=1$). UV lines correspond strictly to the Lyman series, hence zero.