The transition from the state n=3 to n=1 in a | vedclass

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(B) The spectral series of a hydrogen-like atom are classified based on the final energy level $n_f$ of the electron transition.$1$. Lyman series $(n_

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$4 \longrightarrow 3$

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(B) The spectral series of a hydrogen-like atom are classified based on the final energy level $n_f$ of the electron transition.$1$. Lyman series $(n_f = 1)$: Produces ultraviolet $(U.V.)$ radiation.$2$. Balmer series $(n_f = 2)$: Produces visible radiation.$3$. Paschen series $(n_f = 3)$: Produces infrared $(I.R.)$ radiation.Since the transition $n=3$ to $n=1$ results in $U.V.$ radiation (Lyman series),we look for a transition that results in infrared radiation.The Paschen series corresponds to transitions ending at $n_f = 3$. Therefore,the transition $4 \longrightarrow 3$ belongs to the Paschen series and results in infrared radiation.

The transition from the state $n=3$ to $n=1$ in a hydrogen-like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from:

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