Periodic Table of the Elements. u These are called the inner transition elements and they belong...
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Transcript of Periodic Table of the Elements. u These are called the inner transition elements and they belong...
Periodic Table of the Elements
These are called the inner transition elements and they belong here
1
2 13 14 15 16 17
18
3 4 5 6 7 8 9 10 11 12
Vertical columns are called groups or families.
Elements are placed in columns by similar properties.
Horizontal rows are called periods
1234567
There are 7 periods
1A
2A 3A 4A 5A 6A 7A
8A
3B 4B 5B 6B 7B 8B 8B 8B 1B 2B
1
2 13 14 15 16 17
18
3 4 5 6 7 8 9 10 11 12
Metals Luster – shiny. Ductile – drawn into wires. Malleable – hammered
into sheets. Conductors of heat
and electricity.
Non-metals Dull Brittle Nonconductors
- insulators
Metalloids or Semimetals Properties of both Semiconductors
Group 1 are the alkali metals They have 1 valence electron in the outer orbital or energy shell
1
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