# The transition from the state in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from Option 1) Option 2) Option 3) Option 4)

As we learnt in

Energy emitted due to transition of electron -

- wherein

Since n = 4 n = 3 results in ultraviolet so to obtain infrared the energy gap should be smaller. Only option with smaller energy gap is 54.

Hence correct option is 4.

Option 1)

This is an incorrect option.

Option 2)

This is an incorrect option.

Option 3)

This is an incorrect option.

Option 4)

This is the correct option.

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