Atomic Theory Contributions
The atomic theory refers to scientific theory of the nature of matter, which states that matter is composed of units called atoms. However this theory was not just composed by itself. There were many contributors into the finding of how atoms work and explanations.
For example, John Dalton (6 September 1766 – 27 July 1844),who was an English, chemist is best known for his work in the development of the atomic theory. Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of different sizes and mass. Dalton's atomic theory also stated that all compounds were composed of combinations of these atoms in ratios . Dalton also founded the idea that chemical reaction resulted in the rearrangement of the reacting atoms.
Then there was a British physicist, Joseph John (J. J.) Thomson (1856–1940), who had discovered the electron in a series of experiments designed to study the nature of electric discharge in a high-vacuum cathode-ray tube. This experiment was being studied by many other scientists however he came across the electron when it comes to elements which helped him explain the different charges.
Ernest Rutherford (1871–1937) was responsible for a remarkable discoveries in the fields of radioactivity and nuclear physics which as one can see describe how or what is in the nucleus. He discovered alpha and beta rays and identified alpha particles. Most important, he addressed the nuclear structure of the atom. Experiments done in Rutherford's laboratory showed that when alpha particles are fired into gas atoms, a few are m deflected, which implies a dense, positively charged central core containing most of the atomic mass which is called the nucleus.
Niels Bohr ( October 7 1885 – November 18 1962) was a Danish physicist who made foundational contributions to...