Multiple Choice
Strontium-90 is a dangerous isotope because strontium is chemically similar to calcium and is easily incorporated into bone. Sr-90 has a half-life 28.1 years. If a person ingests 100. mg of Sr-90 how much will be left in the person's body after 56.2 years?
A) 75.0 mg
B) 50.0 mg
C) 25.0 mg
D) 12.5 mg
Correct Answer:
Verified
Correct Answer:
Verified
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