half-life

[fvg]

What is material half-life?

[pinus]

This is a quote from another site quote starts Half-life is the time required for half of the atoms of a radioactive isotope to undergo decay. Some isotopes are very stable, undergo decay very slowly, and have extremely long half-lives. Uranium-238 has a half-life of 4.46 billion years! Other isotopes are extremely unstable, and have short half-lives. The isotope francium-233 has a half-life of 22 minutes. That means that if you possessed 10 grams of francium-233, after only 22 minutes you would have 5 grams of francium-233, while the remainder of the atoms would have been converted by some decay processes to other elements. quote ends This is the site http://www.sciencegeek.net/Chemistry/chempdfs/Halflife.pdf You'll find many comments the half lives of different elements if you do a search on element half life

[Jarad]

alternatively half lie is The best game ever... but i guess your talking scientific