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. One milligram of matter on convertion into energy will give
  2. Photoelectric emision occurs only when the incident light has more than a certain minimum
  3. A glass flask weighing 390 g having internal volume 500 cc just floats
  4. What is the value of Ā+A in the Boolean algebra?
  5. A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle

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Your email address will not be published.


*