What is the maximum number of spectral lines, if the sample is containing only one atom? — Atomic Structure Chemistry Question

💡 Solution & Explanation

A single atom can only take one pathway down. To maximize the number of lines, it must cascade through every intermediate level: $n=5 \to 4 \to 3 \to 2 \to 1$. This sequence emits exactly 4 distinct photons (lines). Therefore, correct answer is B.