First slide

Bohr Model of the Hydrogen atom.

Question

What is the potential energy of the electron in the first excited state of hydrogen atom?

Easy

A

-6.8 ev
B

-3.4 ev
C

-10.2 ev
D

-1.52 ev

Solution

Total energy of the electron in the first excited state of hydrogen atom is $- \frac{13.6}{2^{2}} ev i . e ., - 3.4 ev$
$∴$ potential energy = -2 x 3.4 ev = -6.8 ev

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