Period after which only half of the original number of nuclei in a sample of a radioactive element have not decayed.

ex.   half-life for uranium – 238           23892U

= 4.6 x 109 years

So after 4.6 x 109 years, only one half of the original uranium will be left

Cite this article as: William Anderson (Schoolworkhelper Editorial Team), "What is Half-Life? (Chemistry)," in SchoolWorkHelper, 2019, https://schoolworkhelper.net/what-is-half-life-chemistry/.

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