Question:medium

Calculate the ratio of radii of second and third bohr orbit of H-atoms

Updated On: Mar 29, 2026
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Solution and Explanation

Given:
Second orbit → n = 2
Third orbit → n = 3

Step 1: Formula for radius in Bohr model
r ∝ n2

Step 2: Ratio of radii
\[ \frac{r_2}{r_3} = \frac{2^2}{3^2} = \frac{4}{9} \]

Final Answer: 4/9
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