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Domocritus suggested that all matter was formed of different types of tiny discrete particles and that the properties of these particles also determined the properties of matter.
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Provided the method of gathering scientific facts.
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He proposed atoic theory with circular solid mass in motion.
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He discribed atoms as a ball of positive charges containing a number of electrons.
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He created a planetary odel of the atom but was incorrect. His model did discover the atoms rings.
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He discovered the nucleus.
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Discovered the existence of isotopes through the use of a mass spectrograph.
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He Said that the atom is succesive or bital shells of electrons. He also came up with the Bohr Planetary Model.
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He proposed the Electron Cloud Theory. He identified the electron cloud as the probable location of moving particles.
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He determined that the nucleas of an atom is very dense and has a ositive charge.
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He determand that the atoms move in a wave like motion.
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He proved the existence of neutron. He discovered a particle within the nucleus that has a mass simular to a protron.
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He conducted the fist chain reaction releasing energy from the atoms nucleus.
