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an atom is the smallest particle known to exist there are only about 100 different kinds of atoms that combine to form all substances there are thousands of different kinds of atoms that account for a wide variety of substances a large atom can be photographed with the aid of an ordinary microscope None of these

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Answer:

There are only about 100 different kinds of atoms that combine to form all substances.

Explanation:

An atom contains subatomic particles like electrons, protons and neutrons. There are about 118 different kinds of atoms which combine to form a wide variety of substances. A large atom cannot be observed by an ordinary telescope. A transmission electron telescope is used to view atom.

Thus, the correct statement is: There are only about 100 different kinds of atoms that combine to form all substances.

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