Question

why is atom recognised as the smallest particle where elctron is an even smaller sub-atomic particle​

Answer 1

Answer:

electrons alone could not form a compound, element or a molecule itself

an atom is necessary in formation of a compound or element or molecule

Answer 2

Answer:

Atom is the smallest particle which can operate singlely without any aid from anything else.

Explanation:

Whereas electron cannot operate singely. It's of no use singely.

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