Q.

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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a

2E, –E

b

2E,E

c

E, –2E

d

E, –E

answer is C.

(Detailed Solution Below)

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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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