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प्रश्न
The ratio of the wavelengths for the transition from n =2 to n = 1 in Li++, He+ and H is ______.
पर्याय
1 : 2 : 3
1 : 4 : 9
3 : 2 : 1
4 : 9 : 36
उत्तर
The ratio of the wavelengths for the transition from n =2 to n = 1 in Li++, He+ and H is 4 : 9 : 36.
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