Question

The kinetic energy of the electorn in an orbit of radius r in
hydrogen atom is (e = electronic charge)
(a)e²/r²
(b)e²/2r
(c)e²/r
(d)e²/2r²

Answer 1

Answer:

Potential energy of electron in n

th

orbit of radius r in H-atom, U=−

r

e

2

(in CGS)

∵K.E.=

2

1

∣P.E.∣⇒K=

2r

e

2

Answer 2

Explanation:

Potential energy of electron in n

th

orbit of radius r in H-atom, U=−

r

e

2

(in CGS)

∵K.E.=

2

1

∣P.E.∣⇒K=

2r

e

2