Question

obtain the expression for the radius of nth Bhor orbit and show that the radius is proportional to square of the principle quentum number how long will it take for a radioactive sample to radius 1% of its oringinal activity (half life time of the sample is 5.3 years)​

Answer 1

Answer:

5.3 multiply by 4

equal to 21.2

21.2 multiply by 5.3

equal to 112.36

5.3 multiply 2

10.6

10.6 multiply 21.2

equal to 224.72

is the answer