1. The Periodic Table
Antonio & Kevin

2. History Created by Dmitri Mendeleev 1869
Intent of table to illustrate trends of the elements
At point of conception had a total of 63 elements

3. Metals The metal Classification is largest on Periodic table
Shown in green
88 elements in total
Classifications:
Luster
Good conductors of heat and electricity
High density
High melting point
Ductile
Malleable

4. Nonmetals 17 elements Mostly on right side of PT, except for Hydrogen
Shown in Orange
Classifications:
No luster
Poor conductor of heat and electricity
Brittle
Not ductile
Not malleable
Low density
Low melting point

5. Metalloids Shown on “Stair-Case” Shown in Purple Classifications:
Solids
Can be shiny or dull
Ductile
Malleable
Conduct heat and electricity

6. Period Start from 1-7 going down horizontal
Each element in same period have same amount of electron shells

7. Electronegativity
Definition: Ability of an atom to attract electrons when the atom is in the compound
Elements get more electronegative when heading toward F(Fluorine)
Electronegativity values decrease from top to bottom within a group, for representative elements the values tend to increase from left to right across a period

8. Trends of Ionization
Definition: First ionization energy tends to decreases from top to bottom within a group and increase from left to right across a period
Cations are always smaller than the atoms they formed from, anions are always larger then the atoms they formed from

9. Trends of Periodic Table