The half-life of an element is 25 years, then what percentage of a sample will be left over after 125 years and its lifetime are?
A. 3.125% & 1250
B. 3.125% & ∞
C. 6.25% & 1250
D. 6.25% & ∞
Answer:A
The half-life of an element is 25 years, then what percentage of a sample will be left over after 125 years and its lifetime are?
A. 3.125% & 1250 B. 3.125% & ∞ C. 6.25% & 1250 D. 6.25% & ∞