1000 3000 mSv WBC 0 diarrhea hair loss infection 5000 mSv LD 50 6000 mSv 100

# 1000 3000 msv wbc 0 diarrhea hair loss infection 5000

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1000-3000 mSv: WBC = 0; diarrhea, hair loss, & infection 5000 mSv: LD 50 ≥6000 mSv: 100% death in weeks Just FYI Just FYI Know this 21
Half Life All isotopes of all elements heavier than bismuth (atomic # 83) are radioactive. But some of these heavy elements still exist today because they decay very slowly . Half-life (t 1/2 ) – time required for half of a sample of radioactive material to decay ranges from short (nanoseconds) to long (billions of years). The half-life for a particular isotope is constant – no matter the amount of material, temperature, pressure . . . even if it’s part of a compound or not. 22
Radioactive Decay half-life = 8 days etc. 1 st 8 days = ½ decays, ½ remains 3 rd 8 days = 1 / 8 remains 2 nd 8 days = ½ of what is left decays, ¼ remains 23
Half-Life Examples 1.If you have 64 mg of 234Th (t1/2= 24.1 days), how long will it take until only 2 mg is left? 2.If a sample contains 3.0 g of 103Pd (t1/2= 17 days) after sitting for 51 days, how much 103Pd was there originally?

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