Half-life

Science Science 5 of 5 appearances
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"Half-life" appearances by year

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All Science clues by year

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# Clue Answer As Given Value Round Category Air Date Show
Livermorium, atomic number 116, is considered unstable; this is less than 60 milliseconds half-life $600 J SCIENCE TERMS 2016-02-10 #7233
The time it takes for 50% of a given amount of a radioactive element to decay half-life $1,200 DJ SCIENCE GLOSSARY 2009-06-09 #5712
The time it takes for 50% of the atoms to decay in a radioactive substance is called this Half-life $200 J GENERAL SCIENCE 2000-07-19 #3673
For the radioactive isotope Actinium-227, it's 21.8 years Half-life $800 DJ SCIENCE 1997-02-28 #2885
Term for the time it takes a radioactive substance to decay to 50% of its original quantity half-life $300 J SCIENCE 1994-05-02 #2236
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