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Biology, 27.02.2020 22:14 jzjzjzj

Radium has a half-life of 1,620 years. How many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?

A. 1,620 years

B. 3,240 years

C. 4,860 years

D. 6,480 years

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