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Which of the following electronic transition of hydrogen atom produce spectral line associated with longest wavelength. ( $n_{1}$ and $n_{2}$ are energy levels of electronic transition)

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$n_{2} = 1000$ to $n_{1} = 3$

$n_{2} = 10$ to $n_{1} = 2$

$n_{2} = 2$ to $n_{1} = 1$

$n_{2} = 5$ to $n_{1} = 4$

answer is D.

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Detailed Solution

$\frac{1}{λ} = R_{H} [\frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}}] λ : d > a > b > c$

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