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The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its kinetic energy in this state

The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its kinetic energy in this state is (a) 3.4 eV (c)-3.4 eV (b) 6.8 eV (d) -6.8 eV

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