Isotope A has a half-life of seconds, and isotope B has a half-life of millions of years. Which isotope is more radioactive?
1 Answer
Jul 24, 2017
Well, if you really stare at the word "radioactive", you may notice it contains the fragment "active". So, more radioactive means faster half-life. In five minutes, isotope A will fragment many times, and isotope B will not at all fragment.
By inspection, isotope A is more radioactive.
