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Question

What is the ratio of time periods (T1/T2) in the second orbit of hydrogen atom to the third orbit of an He+ ion?

A
8/27
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B
32/27
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C
27/32
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D
None of these
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Solution

The correct option is B 32/27
Time to complete one revolution in nnt orbit of hydrogen like species which has an atomic number of Z:
Tn3Z2
THTHe=3227

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