The total energy of electron in an atom is a combination of potential energy and kinetic energy. If total energy is –E for an electron in an atom, then its K.E. and P.E. respectively are

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2E, –E

2E, E

E, –2E

E, –E

answer is C.

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Detailed Solution

T.E=-e22rK·E=+e22rP·E=+e22rT.E = -EK.E = +EP.E = -2E

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