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The electron in a hydrogen atom makes a ...

The electron in a hydrogen atom makes a transition from an excited stateto the ground state. Which of the following statements is true ?

A

Its kinetic energy increases and its potential and total energies decreases

B

Its kinetic energy decreases, potential energy increases and its total energy remains the same

C

Its kinetic and total energies decrease and its potential energy increases

D

Its kinetic,potential and total energies decrease

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