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NEET2005PhysicsAtomic PhysicsActual

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:

Options

  1. A3.4 eV
  2. B6.8 eV
  3. C-3.4 eV
  4. D-6.8 eV

Correct answer

A. 3.4 eV

Step-by-step solution

K . E .= | 1 2 P . E | But P.E is negative aligned Total energy & = | 1 2 P E |-P E & =- P E 2 =-3.4 eV K . E & =+3.4 eV aligned

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