Ionic Compounds. Ionic Compounds. Ion:. Any atom that has a charge. Cat ion:. An ion with a + charge. an ion:. An ion with a - charge. Ionic Bonds. A bond that forms between (+) metals and (-) non metals. Electrons are transferred and then the opposite charges attract. Octet Rule.
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Any atom that has a charge
An ion with a + charge
An ion with a - charge
A bond that forms between (+) metals and (-) non metals.
Electrons are transferred and then the opposite charges attract.
Element always move to become more stable. Most elements change their electron configuration to match the configuration of noble gasses.
Elements want 8 valence electrons
1. The first element (metal) name does not change.
2. The second elements name ending changes to -ide
(except for polyatomic ions, use the name on the chart)
= sodium sulfate
3. If it is a transition metal Roman Numerals must be used.
The Roman numeral tells you the charge of the transition metal
4. There are no prefixes in ionic compounds
1.Charge must always cancel out
+ and – charges add up to zero.
2. Find the charges from the periodic table or the chart.
3.If the charges are the same they cancel out and it is a one to one ratio.
Ca2+ , O2-
4.If the charges are not the same then use the cross rule