1. The Periodic Table
It’s elemental

3. What does periodic mean?
a pattern that repeats regularly
Periodic Table
A table that organizes all the elements
Elements that are similar are in the same column
Arranged by atomic number (not atomic weight)

4. Cobalt Nickel 27 protons Atomic Mass: 58.933 28 protons
Group 18
All gases
Very non-reactive
All conduct electricity
Group 11
Copper
Silver
Gold
All shiny metals
All conduct electricity
All easy to bend
(malleable)

5. Parts of the Periodic Table1
Groups (or families)
Columns
Groups of elements have similar properties 18 13 14 15 16 17 2 3 4 5 6 7 8 9 10 11 12

6. Parts of the Periodic Table
Periods
Rows
Atoms have up to seven electron shells (or levels)
Each period represents a different shell. 1 2 3 4 5 6 7

7. Parts of the Periodic Table
Blocks
Each block represents a different type of electron orbit. There are 4 types total. 1 p 2 3 d 4 5 6 7 f

8. Characteristics of Atoms
Atomic Radius
How large an atom is
Measured from the nucleus to the outermost electron

10. Characteristics of Atoms
Ionization Energy
How much energy is required to steal an electron from an atom
The bigger the number, the harder it is to steal an electron
The easier it is to steal an electron, the more reactive an element is
Remember:
Atoms turn into Ions when they have different numbers of protons & electrons.

12. Characteristics of Atoms
Electronegativity
How strongly an atom attracts electrons from other atoms towards itself
The bigger the number, the more of an electron “hog” the element is.
The more of a “hog” an element is, the more likely it is to react with other atoms.
Fluorine
The biggest hog
of them all