We’re being asked to determine the value of n_{I}

We’re going to use the **Balmer Equation** which relates wavelengths to a photon’s electronic transitions.

$\overline{)\frac{\mathbf{1}}{\mathbf{\lambda}}{\mathbf{=}}{{\mathbf{RZ}}}^{{\mathbf{2}}}\left(\frac{\mathbf{1}}{{{\mathbf{n}}^{\mathbf{2}}}_{\mathbf{final}}}\mathbf{-}\frac{\mathbf{1}}{{{\mathbf{n}}^{\mathbf{2}}}_{\mathbf{initial}}}\right)}$

λ = wavelength, m

R = Rydberg constant = 1.097x10^{7} m^{-1}

Z = atomic number of the element

n_{initial }= initial energy level

n_{final} = final energy level

**Calculate the ****initial energy level**** ****(n _{initial}):**

In the top part of image below, the four lines in the H atom spectrum are due to transitions from a level for which n_{i} > 2 to the n_{f} = 2 level. What is the value of n_{i} for the red line in the spectrum?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Bohr Equation concept. You can view video lessons to learn Bohr Equation. Or if you need more Bohr Equation practice, you can also practice Bohr Equation practice problems.

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Based on our data, we think this problem is relevant for Professor Carra's class at HCC.