| ⇦ | 
| ⇨ |
The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He⁺ ion in the first excited state will be
Options
(a) – 13.6 eV
(b) – 27.7 eV
(c) – 54.4 eV
(d) – 6.8 eV
Correct Answer:
– 13.6 eV
Explanation:
energy of a H-like atom in its nth state is given by
E = – Z² x 13.6 / n² eV
For, first excited state of He⁺, n= 2, Z= 2
Eₕₑ⁺ = – 4/2² x 13.6 = – 13.6 eV
Related Questions: - The resistance of an ammeter is 13Ω and its scale is graduated for a current
- A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T.
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- The ultimate individual unit of magnetism in any magnet is called
- Two bodies of mass 0.25 kg each moving towards each other with velocity
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The resistance of an ammeter is 13Ω and its scale is graduated for a current
- A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T.
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- The ultimate individual unit of magnetism in any magnet is called
- Two bodies of mass 0.25 kg each moving towards each other with velocity
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply