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Question

Physics Question on Quantum Mechanical Model of Atom

Angular momentum of an electron in hydrogen atom is 3h2π\frac{3h}{2\pi} (h is the Planck’s constant). The K.E. of the electron is

A

4.35 eV

B

1.51 eV

C

3.4 eV

D

6.8 eV

Answer

1.51 eV

Explanation

Solution

The correct answer is (B) : 1.51 eV.