NTA Abhyas JEE Main2020PhysicsAtomic PhysicsPractice
An H atom and a L i + + ion are both in the second excited state. If l H and l Li are their respective electronic angular momenta and E H and E Li their respective energies, then
Options
- Al H > l L i and E H > E Li
- Bl H = l Li and E H < E Li
- Cl H < l L i and   E H > E Li
- Dl H > l L i and E H < < E Li
Correct answer
B. l H = l Li and E H < E Li
Step-by-step solution
In the second excited state, n = 3 ∴ l H = l L i = 3 h 2 π As E ∝ Z 2 and Z H = 1 , and Z L i = 3 ∴ E L i = 9 E H o r E H < E L i