What is an atom? Give eg..
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Many atoms consist of a positively charged nucleus consisting of protons and neutrons surrounded by a cloud of electrons charged negatively. An atom is any particle of matter at its most basic level which contains at least one proton. Here are some examples of the atoms: hydrogen (H) neon (Ne).
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Explanation:
Atom is the smallest particle that takes part in a chemical reaction.
for example : hydrogen, neon etc.
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