ionic - IonicBonding electronsaretransferred...

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Ionic Bonding …electrons are transferred
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Guiding Questions? What is that?  How do we figure out what the chemical formula is?  What does it mean to be "free of chemicals"? 
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Keeping Track of Electrons o The electrons responsible for the chemical  properties of atoms are those in the outer  energy level. o Valence electrons - The  s  and  p  electrons  in the outer energy level. o Core electrons -those in the energy levels  below. 
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Keeping Track of Electrons o Atoms in the same column o Have the same outer electron  configuration. o Have the same valence electrons. o Easily found by looking up the group  number on the periodic table. o Group 2A - Be, Mg, Ca, etc.- o  2 valence electrons
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Electron Dot diagrams o A way of keeping track of  valence electrons. o How to write them o Write the symbol. o Put one dot for each valence  electron o Don’t pair up until they have  to X
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for Nitrogen Nitrogen has 5 valence electrons. First we write the symbol.
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ionic - IonicBonding electronsaretransferred...

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