Electrons with energy 12 eV are shot into a gas of hydrogen atom in the ground state. How manydifferent wavelengths will be emitted out from thisgas sample in Balmer series?(a) One(b) Two(c) Three(d) Zero

Electrons with energy 12 eV are shot into a gas of hydrogen atom in

1.	Electrons with energy 12 eV are shot into a gas of hydrogen atom in the ground state. How manydifferent wavelengths will be emitted out from thisgas sample in Balmer series?(a) One(b) Two(c) Three(d) Zero
Answer» Explanation:In ground state electrons have energy -13.6 eV if it absorbs 12.75 eV it have energy -0.85 eV or it reaches in FOURTH 3rd excited state because THIRD exicted state have energy -0.85 eV . on de-excitation it shows given transition 1. 4→1 transition 2. 4→2 transition 3. 4→3 transition 4. 3→1 transition 5. 3→2 transition 6. 2→1 transition but according to question in emission spectra CONTAINS no line of Balmer SERIES so 2nd and 5th transition is not taken and only FOUR transition is possible