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Verizon [17]
3 years ago
10

What is atomic and mass number

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
5 0
The Atomic Mass Number is the number underneath the Element symbol and it is the atomic mass of the element. You can easily find the atomic mass(or get a very close number to it) by adding the protons and neutrons together. If there are 2 protons and 2 neutrons, the atomic mass would be 4.
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