Multiple Choice
Samples of the following isotopes in pure form, each containing the same number of atoms, are taken. After one year, which sample would still contain the most atoms of the original substance?
A) sodium-24 (half-life 15 hours)
B) strontium-90 (half-life 29 years)
C) iodine-131 (half-life 8 days)
D) lead-210 (half-life 22 years)
E) thallium-206 (half-life 4 min)
Correct Answer:

Verified
Correct Answer:
Verified
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