`Ac^(227)` has a half-life of 22 years . The decays follows two parallel paths What are the decay constant `(lambda)` for Th and

`Ac^(227)` has a half-life of 22 years . The decays follows two parallel paths

What are the decay constant `(lambda)` for Th and Fr respectively ?
A. 0.03087,0.00063
B. 0.00063,0.03087
C. 0.02,0.98
D. None of these

`Ac^(227)` has a half-life of 22 years . The decays follows two parallel paths What are the decay constant `(lambda)` for Th and Fr respectively ?