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kondor19780726 [428]
3 years ago
7

The sun sum of protons and neutrons in the nucleus of an atom.

Chemistry
1 answer:
a_sh-v [17]3 years ago
7 0
Answer is the mass of the atom. Protons + neutrons= mass
Let's say you have oxygen with a mass of 16.
Oxygen has 8 protons
To find neutrons subtract 16-8= 8
So it would also be 8 neutrons.
Example of how to find mass if you know protons + neutrons:
Sodium has 11 protons and 12 neutrons. Add the protons and neutrons
11 + 12= 23
Mass is 23
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