Question

3. stated that hydrogen
atom is the building material
and atoms of all other elements
are simply due to the
combination of number of
hydrogen atom?​

Answer 1

Answer:

The concept that atoms play a fundamental role in chemistry is formalized by the modern atomic theory, first stated by John Dalton, an English scientist, in 1808. It consists of three parts: All matter is composed of atoms. Atoms of the same element are the same; atoms of different elements are different.