Question

what is atom??????????????????​

Answer 1

According to Dalton's theory= Atom is the smallest indivisible particle

According to Modern theory = the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons.

Answer 2

Explanation:

Atoms are building of all matter.

According to modern atomic theory , an atom is the smallest particle of an element which takes part in chemical reaction.

i hope it help you.☺☺