3 years ago

How do calculate the mass number of an atom

2 answers:

4 0

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.

Verizon [17]3 years ago

3 0

You add the protons and the nuetrons together i think

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