Things like who created it? when? ...
2006-12-18 11:52:12 · 2 answers · asked by dolphinlover534 2 in Science & Mathematics ➔ Chemistry
Dalton came up with 4 postulates in his atomic theory of 1803. Since that time we know that:
1) There can be different forms (isotopes) of the same element but that they all have the same atomic number.
2) Atoms can be subdivided in nuclear reactions, but they are not subdivided in chemical reactions.
3) Atoms are composed of tiny particles (they are not solid spheres as Dalton thought).
4) Moseley arranged the periodic table by atomic number and all the ambiguities Mendeleev encountered were resolved.
2006-12-18 12:01:06 · answer #1 · answered by physandchemteach 7 · 0⤊ 0⤋
modern atomic theory
Modern Atomic Theory ... a new more complete atomic theory was developed - the modern atomic theory. ... turned out to be a...
iun.edu/~cpanhd/C101webnotes/.../moder...
Wikipedia: Atomic theory
... and physics, atomic theory is a theory of the nature ... 2 Modern atomic theory. 2.1 Birth of modern atomic theory. 2.2...
en.wikipedia.org/wiki/Atomic_theory
General Chemistry Online: Companion Notes:...
... 1844) developed the first useful atomic theory of matter around 1803. ... atoms have characteristic properties) are...
antoine.frostburg.edu/chem/senese/101/...
2006-12-18 14:20:12 · answer #2 · answered by Byzantino 7 · 2⤊ 0⤋