Thursday, March 25, 2010

covalent bonds

- electrons shared between non-metals


to draw lewis dot diagrams:
- total all valence electrons in atoms
- identify the element that can form the most bonds. this will be the central atom
- draw bonds between atoms as a line (represents 2 electrons)
- any electrons not part of a bond are lone pairs around the atom
- check to make sure each atom has a full octet

example
ammonia water and ethane


C2H4


heres a extremely educational video!!

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