1_Periodic Table

1_Periodic Table

1. History of the periodic table

   • Ancient times
   • What is an element
   • Triads

2. Mendeleev

   • First sight of the periodic table as we know it
   • Atomic mass
   • Arranged based on properties

3. Modern Periodic Table

   • Atomic Numbers
   • Electronic configurations
   • Recurring Chemical porperties

4. Atomic number

   • The number of protons in the nucleus
   • Increase across rows
   • Rows known as periods

5. Groups

   • Located below each other
   • Similar properties
   • 4 main groups

6. Trends in the periodic table

   • ionisation energy
   • Stability
   • electronic configuration