|MadSci Network: Chemistry|
Most people say all elements have isotopes because atomic masses are decimal numbers, but protons don't have a mass of exactly 1 amu, and one book mentioned that when protons and neutrons combine in a nucleus, some mass is lost as binding energy according to E=mc^2. My favourite chem book by Zumdahl only mentions a few elements with isotopes. I'm trying to teach isotopes to my Y10 class, and would like to know if there is a definitive answer with proper reasons.
Re: Do all elements on the periodic table have isotopes
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