An atom is a particle of matter that uniquely defines a chemical
element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons
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Answer:
An atom is a particle of matter that uniquely defines a chemical
element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons
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Answer:
an smallest unit if an element which may or may not have independent existence but always take part in a chemical reaction
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