Periodic Table

Periodic Table

1. Organized by

   • Trends
     • Has
       • Columns
         • Decrease in
           • Ionization energy going down
           • Electronegativity going down
         • Have
           • Similar properties
             • Group 1
               • Alkali metals
             • Group 2
               • Alkaline earth metals
             • Group 7
               • Halogens
             • Group 8
               • Noble gases
     • Has
       • Rows
         • Left to right
           • Smaller atomic radius
         • New
           • Cycle each row

2. Can make

   • Predictions

3. Created by

   • Dmitri Mendeelev
     • Originally based
       • On
         • Atomic mass

4. Period

   • Physical change
     • State of matter
     • Atomic size
   • Chemical change
     • Acid-base
     • Electronegativity
     • Nature
       • Metal
       • Metalloid
       • Non-metal