# Modern Physics or Chemistry?

Chemistry Level 2

Light of wavelength $$12818 \text{ A}^{\circ }$$ is emitted when an electron of a unielectronic species drops from $$5^{\text{th}}$$ to $$3^{\text{rd}}$$ energy level. Calculate the wavelength of the photon emitted when electron falls from $$3^{\text{rd}}$$ energy level to ground level.

Answer in $$\text{nm}$$.

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