A sample of hydrogen atoms in ground state is exposed to electromagnetic radiations of 1028 Å. The w — Atomic Structure Chemistry Question

💡 Solution & Explanation

Incident energy is approx 12.06 eV, causing excitation to $n=3$ (which requires ~12.09 eV). De-excitation yields transitions $3 \to 1$ (~1028 Å), $2 \to 1$ (~1218.4 Å), and $3 \to 2$ (~6579.2 Å). Therefore, correct answer is A, B, C.