If there are 1.024 × 1024 active atoms in a radioactive sample at any instant of time, then what would be the number of active atoms left after eight half lives?
A. 1.024 × 1018
B. 4.0 × 1021
C. 6.4 × 1018
D. 1.28 × 1019
Answer:B
If there are 1.024 × 1024 active atoms in a radioactive sample at any instant of time, then what would be the number of active atoms left after eight half lives?
A. 1.024 × 1018 B. 4.0 × 1021 C. 6.4 × 1018 D. 1.28 × 1019