The energy of a hydrogen atom in the ground state is – 13.6 eV. The energy of a He⁺ ion

The Energy Of A Hydrogen Atom In The Ground State Physics Question

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:

  1. In a circuit, 5% of total current passes through a galvanometer. If resistance
  2. If a solid ball of metal has a concentric spherical cavity with in it if the ball
  3. A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
  4. In a Rutherford scattering experiment when a projectile of charge Z₁ and mass M₁
  5. A particle of mass 1.96×10⁻¹⁵ kg is kept in equilibrium between two horizontal metal

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*