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Multi-Electron Configurations and Orbital Diagrams

In the hydrog...

Question

In the hydrogen atoms, the electrons are excited to the $5^{t h}$ energy level. The number of the limes that may appear in the spectrum will be

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Solution

No. of spectral lines that excite from $n_{2}$ to $n_{1}$ is $\frac{(n_{2} - n_{1}) (n_{2} - n_{1} + 1)}{2} = \frac{4 \times 5}{2} = 10$
So, total of $10$ spectral lines are produced as shown in the image.

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