Indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen according to the bohr model

During the transition of an electron from n = 2 to n = 1 energy will be emitted.

During the transition of an electron from n = 2 to n = 4 energy will be absorbed.

Given:

The electronic transitions in a hydrogen atom to the Bohr atom:

a. n = 2 to n = 1

b. n = 2 to n = 4

To find:

Whether the energy is emitted or absorbed during the given transitions of an electron in a hydrogen atom.

Solution:

a. n = 2 to n = 1

When an electron jumps from a higher energy level to a lower energy level the energy is emitted by an electron in the form of an electromagnetic wave.

So, during the transition of an electron from n = 2 to n = 1 energy will be emitted.

b. n = 2 to n = 4

When an electron jumps from a lower energy level to a higher energy level it is due to the energy absorbed by an electron.

So, during the transition of an electron from n = 2 to n = 4 energy will be absorbed.

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