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posted by Luc Saturday, February 18, 2012 at 12:44am.
An element x has 3 isotopes,a,b,c.a has 5% abundance b,20%,c,75% &a has a mas of 40,b 42,c 45.what is the essntial differnce in the nuclear structure.
c has 5 more neutrons than a and 3 more than b.
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