The total energy of electron in the ground state of hydrogen atom is -13.6 eV . The kinetic energy of an electron in the first excited state is

NEET 2007 Physics question

The total energy of electron in the ground state of hydrogen atom is . The kinetic energy of an electron in the first excited state is

(1)1.7 eV
(2)3.4 eVCorrect
(3)6.8 eV
(4)13.6 eV

Answer: (2)

Solution

The energy of the electron in the th Bohr orbit is . The first excited state is : eV. For a hydrogen-like atom in a circular orbit, the kinetic energy equals the magnitude of the total

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Question ID VK-089930