1.

39. What is the ratio of time periodsthird orbit of hydrogen atom to secondorbit of He ion(1) 8/27 (2) 27/2(3) 37/32(4) none of these40. Which of the following statement about

Answer»

Time pd is directly proportional ton^3/z^2so, (T1/T2) = 27/2

option (2) 27/2 is the right answer.

correct answer is option 2



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