explain the atomic theory
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Answer:
Atomic theory, ancient philosophical speculation that all things can be accounted for by innumerable combinations of hard, small, indivisible particles (called atoms) of various sizes but of the same basic material; or the modern scientific theory of matter according to which the chemical elements that combine to form the great variety of substances consist themselves of aggregations of similar sub units (atoms) possessing nuclear and electron substructure characteristic of each element.
List of Atomic Theories :
1 ) Ancient Greek Beliefs.
2 ) Dalton's Atomic Theory.
3 )J.J. Thomson's Theory.
4 ) Rutherford's Hypothesis.
5 ) Bohr's Theory.
6 ) Einstein, Heisenberg and Quantum Mechanics.
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