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Q.

In a certain electronic transition in the hydrogen atom from an initial state to a final state, if the difference in the orbit radius $(r_{f} - r_{i})$ ) is seven times the Bohr radius, then identify the transition :

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a

$4 \to 3$

b

$\begin{aligned} 4 \to 1 \end{aligned}$

c

$3 \to 1$

d

$\begin{aligned} 4 \to 2 \end{aligned}$

answer is C.

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Detailed Solution

It is known that,

$a_{0} \times n_{1}^{2} - a_{0} \times n_{2}^{2} = 7 a_{0}$

Only (c) option satisfies.

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