which of the following 10 g samples will decay the most in 28 days?
a.P-32
b.Kr-85
c.Fr-220
I-131
the answer is c.Fr-220 but i want to know why, please help
a.P-32
b.Kr-85
c.Fr-220
I-131
the answer is c.Fr-220 but i want to know why, please help