Periodic Table of the Elements
 These
are called the inner
transition elements and they
belong here
Vertical columns are called groups or families.
1
18
2
13 14 15 16 17
3 4 5 6 7 8 9 10 11 12
Elements are placed in columns by similar properties.
 Horizontal
rows are called periods
 There are 7 periods
1
2
3
4
5
6
7
1A
1
8A
18
2A
2
3A 14
13
4A 15
5A 16
6A 17
7A
3B
3 4B
4 5B
5 6B
6 7B
7 8B
8 8B
9 10
8B 11
1B 12
2B
Luster – shiny.
Metals
 Ductile – drawn into wires.
 Malleable – hammered
into sheets.
 Conductors of heat
and electricity.

Dull
 Brittle
 Nonconductors
- insulators

Non-metals
Metalloids or Semimetals
Properties of both
 Semiconductors

 Group
1 are the alkali metals
1  They have 1 valence electron
in the outer orbital or energy
shell
 Group
2 are the alkaline earth metals
 They have 2 valence electrons
2
Transition metals
Groups 3-12
 their properties do
not fit in with those
of any other family.

 Group
13 is called the Boron family
 They have 3 valence electrons
13
 Group
14 is called the Carbon Family
 They have 4 valence electrons
14
 Group
15 is called the Nitrogen Family
 They have 5 valence electrons
15
 Group
16 is called the Oxygen Family
 They 6 valence electrons
16
 Group
17 is called the Halogens
 They have 7 valence electrons
17
 Group
18 are the Noble Gases
 They have 8 valence electrons