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Chemistry 121, Winter 2008, LA Tech
C
N
Na+
O
Cations
•What elements lose electrons? And how many?
•What is the positive charge on their cations?
•Anions
•What elements gain electrons?
•What is the positive charge on their anions?
•Covalent bonds
•How many covalent bonds are formed?
•What elements share electrons? 
Cations and Anions