who contributed in the atomic theory?

Dalton’s theory was not proved to be true in every circumstance. Scientists used nuclear fission to split atoms and prove that the first rule is incorrect. It was also discovered that not all elements of an element have the exact same mass. There are many isotopes. These failures don’t mean that the atomic theory should be abandoned. It accurately describes the law of conservation mass. Atoms that are not destructible must exist after any chemical reaction. This means the same atom must remain as before, with the mass constant. Dalton’s atomic theory also explains the law The principle of constant composition. This is when all the atoms in an element are the same in mass. Also, atoms must unite according to a set of numerical ratios. The law of multiple proportions was created by the atomic theory. We are grateful to Ashton Anderson, Uzbekistan from Samarkand for his contribution. [2]

Britannica.com Additional information is available. Dalton was the son of Quaker tradesmen. His grandfather Jonathan Dalton, a shoemaker and his father Joseph, a weaver, were both born to him. Joseph was married to Deborah Greenup, who herself came from a well-off Quaker household in 1755. Dalton, the youngest of the three children who lived to be adults was among their trio. He attended John Fletcher’s Quaker grammar school in Eaglesfield. John was 12 when he died. Years old, Fletcher turned the school over to John’s older brother, Jonathan, who called upon the younger Dalton to assist him with teaching. Two years later the brothers purchased a school In Kendal they are teaching about 60 students. Some of these boarders come from other countries. We are grateful to Sarajane Thao and her team for this reply. [3]

By far Dalton’s most influential work in chemistry was his atomic theory. Attempts to trace precisely how Dalton developed this theory have proved futile; even Dalton’s own recollections on the subject are incomplete. Dalton’s theory about partial pressures was founded on the notion that unlike atoms react to each other, but like atoms repel one another in a mixture. This explanation explained the behaviourr of each gas in a mixture. This view, though later proven incorrect, served its purpose by allowing Dalton to abandon the belief that all matter atoms were alike. Dalton asserted that different elements have different atom sizes and masses, which is the key feature of his atomic theory. Dalton’s argument that every element has its own type of atom is counterintuitive for those who believe that the complexity of nature would be destroyed by having so many fundamental particles. However, Dalton dismisses their arguments as absurd. He instead focused on determining relative masses for each type of atom. This could only be done by looking at the number of elements in various chemical compounds. Dalton has been a teacher of chemistry for several decades, but he is yet to do any research. [4]