Question

Who discovered atom?
What is atom?​

Answer 1

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• The idea that everything is made of atoms was pioneered by John Dalton (1766-1844) in a book he published in 1808.

• Atom, smallest unit into which matter can be divided without the release of electrically charged particles.

Answer 2

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• Atom was discovered by John Dalton.

• The smallest tiny particles of matter which can't be divided further is called atom, i.e., an atom is the smallest building block of matter.⠀⠀⠀⠀⠀For example: Sodium (Na), Hydrogen (H), Oxygen (O), etc.