What's the difference between atomic mass and mass number?

Answer 1

atomin number tells you how many protons and electrons there are and the atomic mass tells how much mass is in there and if you subtract the atomic number from the atomic mass then you get the number of nuetrons
you should be glad that this is me and not my teacher or else she would go NUTS!!!!!!!!
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good luck hope it helps

Answer 2

First of all that is Atomic number not mass number.
Second, Atomic Number is the number of protons, Atomic Mass is the total number of protons and neutrons.

Answer 3

Atomic mass- the number of protons and nuetrons in an atom

Mass number- The Avg of all of atoms of that element on earth.

Answer 4

atomic mass is the weight of the atom all of it
but it called atomic weight not atomic mass
Scandium.
Atomic Number: 21
Atomic Symbol: Sc
Atomic Weight: 44.9559
Electron Configuration: [Ar]4s23d1
mass number42
mass number is the total number of proton and neutrons
and written above the symbol of the element in the periodic table
thanks