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

💡 Solution & Explanation

Atom 1 maximizes its unique lines by cascading $5 \to 4 \to 3 \to 2 \to 1$ (4 lines). Atom 2 can maximize additional unique lines by taking transitions not yet used. The best unique pathway for Atom 2 from $n=5$ without repeating any transitions from Atom 1 is $5 \to 3 \to 1$ (2 new lines). Total lines = 4 + 2 = 6. Therefore, correct answer is B.