The Atomic Structure

The Atomic Structure

1. Particle

   • Electron
     • Negative Charge
     • Orbits the nucleus
   • Proton
     • Positive Charge
     • Located in the nucleus
   • Neutron
     • No Charge
     • Located in the nucleus

2. Atomic number(Smaller number) and mass number(larger number)

   • Atomic number is the number of protons(or electrons) in an atom
     • Number of protons = number of electrons
   • Mass number = protons and neutrons in an atom

3. The Bohr Structure

   • Electrons are drawn in rings(shells) around the nucleus
     • They are represented as Dots on these rings

4. Isotopes

   • Isotopes are atoms of the same element
     • Which have the same atomic number
       • Differant mass numbers
         • isotopes are atoms that have the same numbers of protons
           • But different number of neutrons
             • E.g Carbon