Monday
December 22, 2014

Homework Help: Chemistry

Posted by Jane on Saturday, November 27, 2010 at 4:04pm.

The following isotopes (listed with their half-lives) have been used in the medical and biological sciences. Arrange these isotopes greatest to least decay activity. (Use the appropriate <, =, or > symbol to separate substances in the list.)

^3H (12.2 years)
^24Na (15 years)
^131I (8 days)
^60Co (5.3 years)
^14C (5730 years)

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