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John Dalton
Thought that all matter was composed of small indivisible particles/atoms. -
JJ Thomson
Thought that atom was positively charged sphere with electrons. -
G.N. Lewis
Thought that electrons were on each corner of a cube. -
Hantaro Nagaoka
Thought that nucleaus was massive with electrons. -
Ernest Ruthorford
Thought that atom was made up of empty space. -
Niels Bohr
Thought that electrons were in more than one orbit. -
James Chadwick
Proved existence of neutrons in diagram.