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20 years (APEX)
20 years
It is 252 days.
This time is known as the half-life.
31 s
18 days
1
9 years
20
16 hours.
16 hours.
16 hours.
20 years (APEX)
The half-life is 16 hours.
The rate of decay for a radioactive sample
The rate of decay for a radioactive sample
How long it takes for half of a sample to decay to another form.