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Which of the following electron transition in a hydrogen atom will require the largest amount of energy

Option: 1

From n=1 to n=2


Option: 2

From n=1 to n=3


Option: 3

From n= \infty to n= 1


Option: 4

From n=3 to n=5


Answers (1)

As we have learnt,

|\Delta E| = 13.6 Z^2(\frac{1}{n_1^2}-\frac{1}{n_2^2})

From the above formula it is clear that the largest difference in energy will arise when the transition takes place from n = \infty to n = 1

Posted by

Sumit Saini

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