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The total energy of electron in the ground state of hydrogen atom is -13.6 eV. The kinetic energy of an electron in the first excited state is
Options
(a) 6.8 eV
(b) 13.6 eV
(c) 1.7 eV
(d) 3.4 eV
Correct Answer:
3.4 eV
Explanation:
Energy in the first excited state
= – 13.6 / n² = – 13.6 / 2² = – 3.4 eV
But K.E. = – (Total energy) = +3.4 eV.
Related Questions: - If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
- The maximum particle velocity in a wave motion is half the wave velocity.
- When temperature of an ideal gas is increased from 27⁰C to 227⁰C,
- In a nuclear reactor, the number of U²³⁵ nuclei undergoing fissions per second
- Pressure gradient has the same dimensions as that of
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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