GENERAL KNOWLEDGE

Detailed explanation-1: -Dalton’s atomic theory was a scientific theory on the nature of matter put forward by the English physicist and chemist John Dalton in the year 1808. It stated that all matter was made up of small, indivisible particles known as ‘atoms’.

Detailed explanation-2: -At the beginning of the 19th century, the English scientist John Dalton proposed an atomic theory that became the basis for the study of chemistry. His theory contained five main propositions: 1. All matter is comprised of tiny, definite particles called atoms.

Detailed explanation-3: -His subsequent work on the constitution, evaporation and thermal expansion of gases led to his derivation of Dalton’s law of partial pressures, which in turn informed his proposition in 1803 of the modern theory of the atom.