What is an Isotope?

Learn what an isotope is in chemistry. Isotopes are two or more types of atoms that have the same atomic number, which represents the number of protons and position in the periodic table but have different mass numbers due to different numbers of neutrons in their nuclei
In order to find the number of neutrons subtract the number of protons from the mass number.

[jadenturner]

Thanks so much for explaining, this helped so much for my test!

[learningp]

i still dont get it. Like both are defined as Na. Why do they have different numbers? One being 23 and other being 24??

[tanyataylor]

everything I need for tomorrow's class, nothing I don't. Thank you!

[Pizzablud]

Thank you! Now teach me what is a dissension, amusia and a purin!

[carterhonsinger]

You have no idea how happy that puppy made me at the end

[Maiasaur]

I sadly still do not understand how this all correlates

[toadshifttoadette]

They took EVERYTHING from me... My voice, my freedom, my LEGACY. And they replaced me with some
BLUE. HAIRED. KID.