1. Periodic
Trends

2. A periodic trend is a pattern that repeats itself on each row of the Periodic Table.
There are lots of periodic trends, but we will focus on
Valence Electrons
State of Matter
Metallic Character
Atomic Radius
Electronegativity

3. Valence Electrons: increase by one for each Representative Element8 1 2 3 4 5 6 7

4. State of Matter
Solids  Gases

5. Metallic Character
Metals - > Metalloids -> Nonmetals

6. Atomic Radius: atoms get smaller going from left to right
And bigger going down

7. Electronegativity: the ability for an atom to attract electrons from a different atom in a chemical bond

8. Electronegativity: correlates with size
Electronegativity: correlates with size. Small atoms have high electronegativity and large atoms have low electronegativity
Noble Gases do not attract electrons
(no EN)
Highest EN
Lowest EN