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Atom - Its Structure - Concept of Atom

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Atom:

Essentially, atoms are the most basic unit of matter, comprising of a proton, neutron and an electron. Protons and neutrons together form a nucleus. The electrons revolve around the nucleus. Protons, as the name suggests, are positively charged, electrons are negatively charged and neutrons are neutral subatomic particles.

Atomic radius is measured in nanometres.

1/109 m = 1 nm

1 m = 109 nm

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