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101
Democritus
HIs theory states that every thing is made of indivisible atoms and their is an infinite amount of them. -
John Dalton
very small atoms indestructablewith no surface -
J. J. Thomson
Based on their behavior some materials are suppost to have a positive and negative charge and pull away from eachother. -
Hantaro Nagaoka
he thought atoms had a nucleus electrons move like saturn in orbit. -
Ernest Rutherford
atoms have a density positively charged nucleus electrons move in the space around the nucleus -
Niels Bohr
electrons move in circle orbit at definite distances from the nucleus -
Erwin Schrodinger and Werner Heisenberger
they developed mathematical equations to help in the creating of the electron cloud model -
James Chadwick
He confirmed the existence of neutrons which dont have any charge and atom nuclei contain neutrons and positively charged protons
