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The kinetic energy of electron in the first Bohr orbit of the hydrogen atom is

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The kinetic energy of electron in the first Bohr orbit of the hydrogen atom is
A. `-6.5 eV`
B. `-27.2 eV`
C. `13.6 eV`
D. `-13.6 eV`
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Correct Answer - C
`K.E. = - ("Total energy") = - (-13.6 eV) = + 13.6 eV`
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