What is the half life of Uranium-238?

Question

bahrom7893 · Answer

@Directrix @jim_thompson5910 @thomaster

e.cociuba · Answer

Radioisotopes used for calculating the age of rocks have very long half-lives. A commonly used radioisotope for this purpose is uranium 238—an isotope of uranium with an atomic weight of about 238. "Uranium 238 has a half-life of about 4.5 billion (4,500,000,000) years". It changes into a radioisotope of another element that in turn changes into a series of other radioisotopes before a stable (nonradioactive) isotope is formed. Source: http://science.howstuffworks.com/dictionary/geology-terms/radioactive-dating-info.htm

bahrom7893 · Answer

Thank you @e.cociuba ! http://www.amazon.com/review/R3JUIEGFUTUWMI/ref=azfs_379213722_UraniumOre_5?_encoding=UTF8&cdPage=2&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-5&pf_rd_r=16QAXTYEZP9WDF1VMYPS&pf_rd_t=1401&pf_rd_p=1604265482&pf_rd_i=1001250201

thomaster · Answer

$\sf\large 4.468 × 10^9\ years,\ to\ be\ exact\ :P$

bahrom7893 · Answer

Just because you wrote it in big letters doesn't mean you deserve a medal, unless eco is nice enough to give you one.

thomaster · Answer

Lol give your medals to the people who need them, I've got enough :P