Question

what is an atom?
what us isotops?​

Answer 1

Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons.

Atom is the smallest unit of ordinary matter that forms a chemical element. Atoms are extremely small typically around 100 picometers across.

Answer 2

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$what \: is \: an \: atom?$

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The atom is the basic building block for all matter in the universe. Atoms are extremely small and are made up of a few even smaller particles. The basic particles that make up an atom are electrons, protons, and neutrons. Atoms fit together with other atoms to make up matter.

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$</p><p>what \: is \: isotopes?</p><p>$

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Isotopes are atoms that have the same number of protons and electrons, but a different number of neutrons. Changing the number of neutrons in an atom does not change the element. Atoms of elements with different numbers of neutrons are called "isotopes" of that element.