1. 6.2: Classifying the Elements
The Periodic Table
6.2: Classifying the Elements

2. Periodic Squares May (or may not) show: Symbol/name Atomic number
Average atomic mass
Location (in nature or not)
Group location
Etc.

3. Group Locations on P.T. Group 1A Elements: Alkali Metals
Group 2A: Alkaline Earth Metals
Group 7A Nonmetals: Halogens

5. Electrons are very important when determining characteristics of elements.
Based on electron number and location around nucleus, elements can be sorted into classes as follows:

6. The Noble Gases Group 8A elements
Helium, Neon, Argon, Krypton, Xenon, and Radon
Sometimes called
inert gases
because they rarely
take part in reactions

7. The Representative Elements
Groups 1A through 7A
Display a wide range of physical and chemical properities

8. Transition Metals Group B Elements (main body of periodic table)
Characterized by electron presence

9. Inner Transition Metals
Appear below the main body of the periodic table
AKA: Rare Earth Metals (misleading because some are more abundant than other elements)