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1,What is an atom? What are its features?
2. What are the three subatomic particles? How does one differ from the other?
3. How will you get the number of neutrons in an atom, given its atomic mass and
proton particles?
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Answer:
1.an atom is the smallest unit of the matter that retains all of the chemical properties of an element
2.these are the three subatomic particles-electrons,protons,neutrons
3.for all atoms with no charge,the number of eletrons is equal to the number of protons