See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Total line for H atom and li2+ ion are 6,15. But 2 → 1 has same energy as 3 → 6 in li2+ions so total line = 20 if sample is containing only H then there are 2 balmer lines in li2+ all lyman lines are in u.v = 5 all balmer lines in u.v = 4 in li2+ few more lines can be in u.v