The radius of third stationary orbit of electron for Bohr's atom is P. The radius of fourth stationary orbit will be

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Solution

Q.
The radius of third stationary orbit of electron for Bohr's atom is P. The radius of fourth stationary orbit will be [2024]

1 $\frac{4}{3} R$

2 $\frac{16}{9} R$

3 $\frac{3}{4} R$

4 $\frac{9}{16} R$

Ans.
(2)

$r \propto \frac{n^{2}}{Z}$

$\frac{r_{4}}{r_{3}} = \frac{4^{2}}{3^{2}} \Rightarrow r_{4} = \frac{16}{9} R$

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