Which Is More Dangerous in Terms of Short-Lived Exposure to Radiation

question 44

Multiple Choice

Which is more dangerous in terms of short-lived exposure to radiation? One mole of

• A). 83 Sr,? - ,t 1/2 = 1.35 days.
• B). 90 Sr,? - ,t 1/2 = 28.5 years.
• C). 80 Sr,? - ,t 1/2 = 1.77 hours.
• D). 94 Sr,? - ,t 1/2 = 74 seconds.