| ⇦ | 
| ⇨ |
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: - A boy whirls a stone in a horizontal circle of radius 1.5 m and at height 2.0 m
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- A person can see clearly objects only when they lie between 50 cm and 400 cm from
- Two concentric spheres kept in air have radii R and r.
- When the angle of incidence is 60° on the surface of a glass slab, it is found
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A boy whirls a stone in a horizontal circle of radius 1.5 m and at height 2.0 m
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- A person can see clearly objects only when they lie between 50 cm and 400 cm from
- Two concentric spheres kept in air have radii R and r.
- When the angle of incidence is 60° on the surface of a glass slab, it is found
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