Navigate

The kinetic energy of an electron in the first excited state is

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.

AIPMT2007
admin:

Related Questions

  1. A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series
  2. Angular momentum of the particle rotating with a central force is constant due to
  3. Laser beams are used to measure long distance because
  4. A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
  5. The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released