The History of the atom and atomic structure

• Atoms are tiny particles of matter.
• What was the order of atom developers?

  Dalton, Thompson, Rutherford, Bohr
• Rutherford 'gold foil experiment'
• Thompson model was the 'plum pudding'
• The diameter of an atom is 1x10‐¹⁰
• Relative mass of a proton is 1.
• Relative mass of a neutron is 1.
• Relative mass of a electron is 0.0005.
• Relative charge of a proton is +1.
• Relative charge of a neutron is 0.
• Relative charge of a electron is -1.
• The atom is made up of protons, neutrons and electrons.
• Nearly all the mass of an atom is concentrated at the nucleus.
• The electron arrangements may change with the interaction with EM radiation.