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The Periodic Table

Periodic Table Set-Up

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How is the Periodic Table Set up?? Edit Text

 

The periodic table was originally put together by Dmitri Mendeleev.

The chart was set up by having the  elements organized  according to

physical and chemical properties

and by increasing atomic number. 

 

He arranged the elements into 7 Periods

AKA

Rows

and 18 Groups AKA Columns.

 

Elements with similiar properties are placed in the same columns.  These groups are called Families Edit Text

Dmitri Mendeleev's first orignal periodic table
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 Families of the Periodic Table

Alkali metals are located in the first column under hydrogen. (from lithium down to francium)
Alkaline earth metals are located in the second column, from beryllium down to radium.
 
The transition metals consist of everything from zinc and below. (groups 3-12)
 
Chalogens: From Oxygen down to polonium. "The name means chalk-makers."
 
Halogens: Fluorine down to astatine. "The name means salt-makers."
 
The noble gases start from Helium down to Radon. (Group 18)
 
The rare earth metals are the two rows below the main table.

 

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On the periodic table, there is a bold zig-zag line, also known as the staircase. This lines separates elements that are metals from non-metals. This line is located towards the right of the periodic table (just left of Boron- #5). Elements touching the staircase have the same properties of being a metal or a non-metal. These metals are called metalloids.  (Groups 13-17)

The colors of the periodic table represent the properties of each element. They are there to indicate whether an element is a solid, liquid or gas.
 
For eaxmple: Liquids are written in Blue. Gases are the elements written in red, and usually elements written in black are solids.
 
 
Valence electrons are located in the valence shell. A valence shell is the outermost shell of electrons. Shells are all of the orbitals in an atom Number of valence electrons determines how an element reacts during chemical reactions.Each shell, can hold up to a specific number of electrons.

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~Joke of the Page~
 
* " What happens when electrons lose their energy?" *
 
 
 
 * "They  Get Bohr'ed" *