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An electron in a hydrogen -like atom is ...

An electron in a hydrogen -like atom is in an excited state. It has a total energy of -3.4 eV. Calculate the kinetic energy of the electron.

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According to Bohr modal of atom when the total energy of an electron is -E , its kinetic energy =+E. So, in this case, kinetic energy of the electron =3.4 eV.
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