Isotope, in chemistry, one of two or more forms of an element that have the same atomic number but different atomic weights.
Isotope
VIDEO: Check out amazing videos exploring the chemistry of innovations. »
You Might Also Like
How LSD Works
Can you pass the acid test? That electric Kool-Aid changed the fabric of 1960's American counterculture. So what's it's like to trip on LSD?
How Mass Spectrometry Works
Mass spectrometry enables the major league to sniff out athletes guilty of doping. It can also help us locate oil or design a killer perfume. Who says chemistry isn't cool?

