| ⇦ | 
| ⇨ |
The excitation potential of hydrogen atom in the first excited state is
Options
(a) 13.6 V
(b) (-13.6 V)
(c) 10.2 V
(d) (-10 V)
Correct Answer:
10.2 V
Explanation:
Energy of electron in ground state of hydrogen atom,
E₁ = -1.36 eV [E(n) = (-13.6 / n²) eV]
Energy of electron in first excited state of hydrogen atom,
E₂ = -13.6 / 2² = – 3.4 eV
Hence, the excitation energy of hydrogen atom in first excited state,
E = E₂ – E₁ = – 3.4 – (-13.6) = 10.2 eV
Therefore, excitation potential is 10.2 V.
Related Questions: - Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- A particle is dropped from a building. It takes 4 sec for the particle to reach the ground
- The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- A particle is dropped from a building. It takes 4 sec for the particle to reach the ground
- The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
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