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Chemical sciences/MCQs on Atoms and Atom Model - Quiz
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.[1] Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are very small; typical sizes are around 100 pm (a ten-billionth of a meter, in the short scale).[2] However, atoms do not have well-defined boundaries, and there are different ways to define their size that give different but close values.
Last Updated: 23rd Aug 2016
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