Evolution of Atomic Model

By jennapie1

  • Dalton Model

    Dalton believed atoms were tiny, indestructible, and no internal structure

  • Thomson Model

    Thoson discovered the electron. Imagines electrons embedded in a sphere of positive electrical charge

  • Hantaro Nagasoka

    suggested that atoms have a central nucleus and move in orbits

  • Rutherford Model

    Rutherford finds atoms have small dense positively charged nuclei. Electrons move around nucleus

  • Bohr Model

    electrons move in circular orbits at fixed distances from the nucleus

  • Loius de Broglie

    proposed moving particles have some properties of waves

  • electron Cloud Model

    Schrodinger develops mathematical equations to describe motion of electrons in atoms. Led to electron cloud model

  • James Chadwick

    Confirmed existence of neutrons which have no charge. Atomic nuclei contain neutrons and positively charged protons

A list shows items. A timeline shows sequence.

Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.

Build your timeline