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100
Democritus
In 400 BC Democritus formulated the Atomic Theory for the universe. He had the idea that there had to be a smallest unit of matter. -
John Dalton
Helped develop the modern atomic formula. He performed many experiments with chemicles and found out that matter consists of lumpy masses. -
J.J. Thompson
Thompson discovered the electron. He aslo propoesd the Rasin in the Pudding model. -
Albert Einstein
Published the famous equation E=MC2 -
Ernest Rutherford
He conducted experiments to see the inside of the atom. -
Robert Millikan
He did many experiments to find out the mass of 1 electron. -
Niels Bohr
Niels Bohr developed the Bohr model. It is a modle of an atom with a nucleus in the middle and electrons in orbit around it. -
Louis de Broglie
He helped contribute to the Quantum Formula by postulating the wave nature of electrons and he suggested that all matter has wavelike properties. -
Wolfgang Pauli
Predicted that an electron spins when it orbits the nucleus. Made a rule governing the behavior of electrons within the atom that followed the experiment. -
Werner Heisenberg
He created quantum mechanics and made important contributions to the theories of the atomic nucleus and subatomic particles. Behavior of atoms are based on mathematical quantities. Indetermency. -
Erwin Schrodinger
He developed an Atom wave model. -
James Chadwick
He discovered the subatomic particle neutron,
