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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