Atomic Theory - crash course
Just How Small is an Atom - (putting the size of the nucleus in perceptive)
Atomic Theory - TedEd
putting the size of the atom in perceptive
Click here to see the various isotopes of elements on the Periodic Table
1 mol = atomic mass from PT
1 mol = 6.02 x 10^23 atoms
from 1:39min - 3: 37min