Modern atomic theory
some Basics concepts of chemistry #10
- Modern Atomic theory.
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The main points of modern atomic theory are---
(1) According to modern atomic theory, An Atom is no longer indivisible. ---Atom is composed of number of subatomic particles of which protons, electrons and neutrons are important.
(2). Atom of the same elements may not be Identical in mass. After the discovery of Isotopes has been proved that Atoms of same elements may have Atoms of different masses. e.g
(3). Atom of different elements usually combine together in a fixed simple whole number to form molecules, But several of compounds are known in which atoms do not combine together in a fixed simple whole number ratio, called non-stoichiometric compound. e.g FeO0.93
(4).Atoms are no longer considered indestructible.
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