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

we know KE=–TE PE=2×TE If TE=−E KE=E PE=2(−E)=−2E

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