Science

Atom History

By FnXjEti
  • 450 BCE

    Democritus

    Democritus
    His atomic model was solid, and stated all atoms differ in size, shape, mass, position, and arrangement, with a void exists between them.

  • Dalton

    Dalton
    His atomic model stated that all matter was composed by atoms, indivisible and indestructible building blocks.

  • Thomson

    Thomson
    His atomic model stated that all atoms contain tiny negatively charged subatomic particles.

  • Rutherford

    Rutherford
    His atomic model postulated the nuclear structure of the atom.

  • Bohr

    Bohr
    His atomic model proposed a theory for hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities.

  • Schrödinger

    Schrödinger
    His atomic model is know as the quantum mechanical model of the atom.

  • Chadwick

    Chadwick
    His atomic model discover the neutron.