Chapter 11 Chemical Bonds: The Formation of Compounds from ...

11.2 Lewis structures of atoms
metals tend to form cations and nonmetals tend to
form anions in order to attain a stable valence
electron structure which contains 8 electrons
this rearrangements are accomplished by losing,
gaining or sharing electrons with other atoms
Lewis structure – using the symbol for element
and dots for valence electrons
paired dots represent paired electrons
unpaired dots represent unpaired electrons
ex. · unpaired electron
:B
paired electron symbol for element
Lewis structures for the first 20 elements
5