Practice: Which element possesses a -2 charge when it combines with other elements?
Elements lose or gain electrons to have the ideal number of outer shell electrons like the noble gases.
Concept #1: Periodic Table: Charges
Metals lose electrons and become cations. Non-metals gain electrons and become anions.
Example #1: From what you know about ion formation and the Periodic Table, which ion would be unlikely to occur?
Concept #2: Main Group Elements
Example #2: Predict the charge that a gallium ion would possess.
Practice: Which element possesses a -2 charge when it combines with other elements?
Concept #3: Transition Metals (Type II Metals)
Transition metals have varying positive charges due to their electron arrangements.
Example #3: Predict the major charge of an ion if it were discovered to be in Period 10, Group 3B.
Practice: What is the likely charge of the element with an atomic number of 47?
Practice: How many electrons would the cadmium ion possess?