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20 Cards in this Set
- Front
- Back
What are valance electrons |
electrons in the highest occupied energy level of an element |
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How do you determine the number of valance electrons |
look at the group number (remove A) and it is the # of valance electron OR if using 1-18, from families 13-18, drop the one so 18 would be 8 electrons |
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what are usually the only electrons involved in a chemical reaction |
valance electrons |
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what is the Luis Dot diagram |
a dot diagram made from the valance electrons |
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What is the Octet Rule |
In forming compounds, elements try to achieve the electron configuration of the Noble Gases- as a result, most electrons try to form 8 electrons in their outermost energy level |
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What do metals do to achieve a "full" outermost level like nobel gases |
lose their electrons |
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What do nonmetals do to achieve a "full" outermost level like nobel gases |
gain electrons |
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wat will metals do to form a positive charged ion or cation |
loes electrons |
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how are transition metals different than alkaline and alkaline earth metals |
they will form more than one ion (iron II and iron III) |
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Why isn't transition metals electron configuration the same as nobel gases |
they don't follow the octet rule |
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how are negatively charged ions, aka anions, formed |
they gain electrons |
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what is the common suffix for anions |
-ide |
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what are halides |
the halogen group that forms negative ions |
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What element is commonly a form of an anion |
Oxygen (takes on 2 electrons to have a negative 2 charge) |
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What are polyatomic ions |
covalently bonded atoms that act as anions |
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What are ionic compounds considered to be |
electrically neutral even though they are made up of charged atoms |
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What are ionic compounds bonds made up of and what is it |
ELECTROSTATIC CHARGE-- positive charge attracts negative charge |
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What are some properties of ion compounds |
usually crystallized at room temp high melting points |
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what is the coordination number of an ion |
the number of opposite charged ions that surround an anion in a crystal |
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how do ionic compounds conduct electricity |
if they are melted or dissolved in water |