Difference between atomic number and atomic mass?
atomic number is a number
atomic mass is a mass
The difference between the atomic number and the mass number is that the atomic number is the number of protons in the nucleus of an atom of that element. The mass number is the total number of protons and neutrons in the atom. Atomic number = number of protons Mass number = total number of protons + neutrons
The difference between atomic mass and average atomic mass is that atomic mass has to do with the periodic table. and it's the number that is in each block, you subtract the number of protons from the atomic number to find the amount of neutrons in each element of the periodic table. The average atomic mass of an element is the weighted average mass of the mixture of an element's isotopes.