Atomic structure

• Elements contain 1 type of atom
• What are the 3 atoms


  Protons neutrons and electrons
• Proton

  Position: nucleus

  Relative mass: 1

  Relative charge:+1
• Neutron

  Position: nucleus

  Relative mass: 1

  Relative charge 0
• Electron

  Position: orbiting

  Relative mass: 1/1840

  Relative charge: -1
• Atomic number


  The number of protons in nucleus
• Mass number


  The total of protons and neutrons
• Isotope


  An atom of an element with same number of protons but different number of neutrons