What are 3 ex: of an isotope?

Question

What are 3 ex: of an isotope?

Answer 1

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Answer 2

I'm going to use the "teach a man to fish" concept.

So rather than giving you a fish, consisting of three examples of isotopes, I'm going to show you where they are biting.

My favorite online periodic table is http://www.dayah.com/periodic/

Click on the "isotopes" tab.  Then click on any element.  Several more boxes will open, each giving the atomic mass of that isotope.  The line around the box is color-keyed to whether the isotope is stable or by what means that it decays.  There is also a section above the table giving much more information about the isotope on which you have clicked.  

Try it. Iit's always in a tab on my browser.

  

Answer 3

carbon 12, 13, and 14, which account for 98.89%, about 1.1%, and 0.0000000001% of carbon (in air), respectively.

(C-14 is radiactive but long-lasting, with half life over five thousand years)

Nitrogen 13, 14, and 15. (N-13 is radioactive and degrades fast, half life of 10 minutes).

Sulfur has 18 different isotopes