<span> the average mass of all the different isotopes of the atom</span>
The electron is a subatomic particle that has a negative charge and a negligible mass. The electron travels around out side the nucleus.
The subatomic particles that are inside the nucleus are protons and neutrons.
The answer to your question is electron.
Answer:
The question 7 answer is false
the question 8 answer is true
Answer:
the solid particles breaks down allowing the liquid to mix with
