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The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?A. Its Kinetic energy increase and its potential and total energies decreaseB. Its Kinetic energy decrease , potential energy increases and its total remian the sameC. Its Kinetic and total energies decrease and its potential energy increasesD. Its Kinetic , potential and total energies decrease

Answer» Correct Answer - A
Kitnetic energy `(K.E)=(13.6z^(2))/(n^(2)eV)`
Ptential `(P.E)=(-2(13.6)z^(2))/n^(2)eV`
Total energy `(T.E) =(-13.6z^(2))/n^(2)eV` When an electron in H-atom makes a transition from an excited state to the ground state, value of n decrease, hence `K.E` & `T.E`. decrease


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