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A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one electron.
Explanation:
Answer:
nonmetals. it's one of them
Answer:
We mostly use Kilograms and grams to measure mass =)
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