Question

The kinetic energy of an electron in the ground level in hydrogen atom is K units. The values of its potential energy and total energy respectively are_______
Fill in the blank with the correct answer from the options given below.

• A. -2K; -K
• B. +2K; -K
• C. -K; +2K
• D. +K; +2K

Answer 1

The Correct Option is A

Let's analyze the energy relationships in the hydrogen atom.

1. Kinetic Energy (KE):

The kinetic energy of an electron in the ground level of a hydrogen atom is given as K.

KE = K

2. Potential Energy (PE):

The potential energy of an electron in a hydrogen atom is related to its kinetic energy by:

PE = -2 * KE

Since KE = K:

PE = -2K

3. Total Energy (TE):

The total energy of an electron in a hydrogen atom is the sum of its kinetic and potential energies:

TE = KE + PE

TE = K + (-2K)

TE = -K

Therefore, the potential energy is -2K, and the total energy is -K.

The correct answer is:

Option 1: -2K; -K