The half-life of the ratio element `._(83)Bi^(210)` is 5 days. Starting with 20 g of this isotope, the amount remaining after 15 days isA. 10 gB. 5 gC. 2.5 gD. 6.66 g

The half-life of the ratio element `._(83)Bi^(210)` is 5 days. Startin

1.	The half-life of the ratio element `._(83)Bi^(210)` is 5 days. Starting with 20 g of this isotope, the amount remaining after 15 days isA. 10 gB. 5 gC. 2.5 gD. 6.66 g
Answer» Correct Answer - C `n = (15)/(5) = 3, N = (N_(0))/(2^(n)) = (20)/(2^(3)) = (20)/(8) = 2.5 g`

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The half-life of the ratio element `._(83)Bi^(210)` is 5 days. Starting with 20 g of this isotope, the amount remaining after 15 days isA. 10 gB. 5 gC. 2.5 gD. 6.66 g

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