The ratio of the wavelengths for \( 2 \rightarrow 1 \) transition in
\( \mathrm{Li}^{2+}, \mathr....
The ratio of the wavelengths for \( 2 \rightarrow 1 \) transition in
\( \mathrm{P} \)
\( \mathrm{Li}^{2+}, \mathrm{He}^{-} \)and \( \mathrm{H} \) is
W
(1) \( 1: 2: 3 \)
(2) \( \frac{1}{9}: \frac{1}{4}: \frac{1}{1} \)
(3) \( 1: 4: 1 \)
(4) \( 3: 2: 1 \)
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