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The Periodic Table


Jalisa Byrd

on 2 March 2010

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Transcript of The Periodic Table

The Periodic Table Elements: Metal Magnesium Nonmetal Helium Metalloid Boron Metals are: Solids
Conduct Heat
Conduct electricity

NOnmetals are: Solids
electrical isulaters
poor heat conductors
shatter Metalloids are: solids
poor heat conductors
poor electricity conductors to the right is a picture showing
where the groups and periods
are located >>>>>
the groups are the vertical columns there are 18 groups the periods are the horizontal rows there are 7 periods graph of an atom to find the Atomic number
use this formula: Z=n p=n e to find the mass number
use this formulas: a=n p+n n Different neutrons=
different mass numbers example of an isotope: energy levels are:
k,l,m,n,o,p,q valence electrons are the electrons in the last shell or energy level of an atom Example of an electron dot symbol
Full transcript