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John Dalton postulated that atoms of the same element are exactly alike in his atomic theory developed in the early 19th century.
Dalton believed that there was a different atom for each element that there was, and that these atoms made up the elements that were in existence. He did not say exactly how these atoms were different, just that they were different. Dalton also believed that all of the atoms for a given element were exactly alike in every way.
Atoms are made up of the smallest form of matter
Atoms of the same element are alike in terms of their number of protons, which determines the element. However, atoms of the same element can differ in the number of neutrons they contain, leading to different isotopes of that element.
they all have same number of protons and electrons (in unionized form) but may have different number of neutrons.
* All elements are made of tiny indivisible particles called atoms. * All atoms of a given element are alike but the atoms of one element differ from the atoms of every other element. * Atoms are not created, destroyed or converted into other kinds of atoms during chemical reactions. They are simply rearranged into new compounds. * Compounds result from the chemical combination of a specific ratio of atoms of different elements 10A who is asking this question