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The total energy of an electron in the firstexcited state of hydrogen atom is about –3.4eV. Its kinetic energy in this state is [2005]
  • a)
    3.4 eV
  • b)
    6.8 eV
  • c)
    –3.4 eV
  • d)
    –6.8 eV
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The total energy of an electron in the firstexcited state of hydrogen ...
Mechanical energy =
∴ K.E. in 2nd orbital for hydrogen
= – Mechanical energy
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Most Upvoted Answer
The total energy of an electron in the firstexcited state of hydrogen ...
-3.4 eV (electron volts).
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