The average life of a excited state of hydrogen atom is of the order of 10^(-8)sec. the number of revolutions made by an electron when it returns from n=2 to n=1 is:

The average life of a excited state of hydrogen atom is of the order o

1.	The average life of a excited state of hydrogen atom is of the order of 10^(-8)sec. the number of revolutions made by an electron when it returns from n=2 to n=1 is:
Answer» `2.28xx10^(6)` `22.8xx10^(6)` `8.23xx10^(6)` `2.82xx10^(6)` ANSWER :C