WS2-ElecConfNucChemKEY

Strontium90isaradioactiveisotopethatisformedinnucleare

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Unformatted text preview: 00 Fm + 2 He d. Gamma decay of Aluminum‐27 27m 27 0 13 Al 13 Al + 0 5. Strontium‐90 is a radioactive isotope that is formed in nuclear explosions. The half‐life of strontium‐90 is 28 years. If a soil sample contains 36 pCi of strontium‐90 in 2000, what will be the activity of the strontium‐90 in the soil sample in 2084? First, figure out how many half‐lives:from 2000 to 2084, 3 half lives. At each half life, the activity of the sample decreases by half. First half life: 36/2 = 18 pCi Second: 18/2 = 9 pCi Third: 9/2 = 4.5 pCi 2 of 2...
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