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The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its kinetic energy in this state is

(a) 3.4eV

(b) 6.8eV

(c) -3.4 eV

(c) -6.8 eV

Navjyot Kalra , 12 Years ago
Grade 10
anser 1 Answers
Aditi Chauhan

        (a)

K.E. =  (13.6eV) 

Mechanical energy = (13.6 eV) 

\      K.E. in 2nd orbital for hydrogen

= - Mechanical energy

Last Activity: 12 Years ago
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