Tue June 03, 2008 By:

basic concepts of chemistry

Expert Reply
Wed June 18, 2008


The sum of all the isotopes can be represented by a pie graph.:


One pie = all the isotopes.
The isotopes then are pieces of the pie:1 pie, two pieces. 



The fractional abundance of any two isotopes making up all the known isotopes of an element is ALWAYS x and 1-x, as shown in the “pie” picture.




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