2.27) Obtain an expression for the radius of nº Bohr orbit. How long will it take for a radioactive sample to reduce to 1% of its original activity?(Half life period of sample is 5 3 years)

2.27) Obtain an expression for the radius of nº Bohr orbit. How lon

1.	2.27) Obtain an expression for the radius of nº Bohr orbit. How long will it take for a radioactive sample to reduce to 1% of its original activity?(Half life period of sample is 5 3 years)
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2.27) Obtain an expression for the radius of nº Bohr orbit. How long will it take for a radioactive sample to reduce to 1% of its original activity?(Half life period of sample is 5 3 years)​

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2.27) Obtain an expression for the radius of nº Bohr orbit. How long will it take for a radioactive sample to reduce to 1% of its original activity?(Half life period of sample is 5 3 years)