First slide

Bohr Model of the Hydrogen atom.

Question

The ratio of the areas of the circular orbits of an electron for the first excited state in a hydrogen atom to that for the ground state is

Easy

A

4:1
B

8 :1
C

16 ;1
D

32 ;1

Solution

$or orbital area \propto n^{4} \frac{A_{2}}{A_{1}} = \frac{(2)^{4}}{(1)^{4}} = \frac{16}{1} or A_{2} : A_{1} = 16 : 1$

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