Question

The degeneracy of hydrogen atom that has energy equal to $\frac{-R_{ H }}{9}$ is (where $R_{ H }=$ Rydberg constant)

• A. 6
• B. 8
• C. 5
• D. 9

Answer 1

Answer: (D)

9

Answer 2

Here, $\frac{-R_{ H }}{n^{2}}=\frac{-R_{ H }}{9}$ $\Rightarrow n=3$