For an atom of an element:
number of electrons = number of protons = atomic number of element
AUS-e-TUTE has a new tutorial, game, test and drill to help you learn and apply this idea.
AUS-e-TUTE members should log-in to access these new resources.
If are not an AUS-e-TUTE Member, there is a "free-to-view" tutorial currently available at:
http://www.ausetute.com.au/noelectron.html
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