Dalton's atomic theory had 5 main points: Elements are made of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed. read more
John Dalton's theory regarding atomic theory, published in 1808, incorrectly stated that atoms were the indivisible components of matter. This was later shown to be incorrect when the existence of electrons, protons and neutrons was demonstrated. read more
Best Answer: John Dalton (1766 – 1844) 1803 – Daltons Atomic Theory is discovered. 1805 – 1827. Daltons theories are published in his books ‘New systems of chemical philosophy’. read more
In the third part of Dalton's atomic theory, he proposed that compounds are combinations of two or more different types of atoms. An example of such a compound is table salt. Table salt is a combination of two separate elements with unique physical and chemical properties. read more