Do Now 1.Label the element square. 2.What is an oxidation number? 3.How do you think we can use...
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Transcript of Do Now 1.Label the element square. 2.What is an oxidation number? 3.How do you think we can use...
Do Now1. Label the element square.
2. What is an oxidation number?
3. How do you think we can use these numbers to predict the type of bond formed? (ionic, covalent)
10Ne
Neon20.180
Atomic #
Chemical Symbol
Element Name
Avg. Atomic mass #
The charge of an atom when it gains, loses, or shares an e- in a chemical bond.
Elements close to noble gasses tend to give or take e- and form ionic bonds.
Homework Achieve 3000 – A New House on the Block (4-15)
AnnouncementsFriday – Take your child to work dayMonday – FSA/FCAT Testing
Testing WeekPackets and labs – make up work
On the periodic table, strong electron donors are on the left side (alkali metals).
Strong electron acceptors are on the right side (halogens).
The further apart two elements are on the periodic table, the more likely they are to form an ionic compound.
Form when electrons have equal tendency to accept e-.
Elements are both nonmetals and tend to be close together on the periodic table.
Oxidation # of Common polyatomic ions
Page 366
OxidationNumber
Name of Ion Formula
1+ammoniu
mNH4
+
2- carbonate CO32-
1- hydroxide OH-
3-phosphat
ePO4
3-
2- sulfate SO42-
Naming Compound Rules Page 367-368
Binary Compounds
MgBr2
1. Write the name of the 1st element• Mg = Magnesium
2. Write the root name of the 2nd element• Br = Bromine = brom-
3. Add the suffix –ide to the root name• brom + ide = bromide
4. Write the name
Magnesium bromide
lower case
Naming Compound Rules Page 367-368
prefixes
N2O4
1. Write the name of the 1st element Prefix: Specify the #• N2 = di + nitrogen
2. Write the root name of the 2nd element Prefix: Specify the # Suffix: - ide• O4 = tetra + ox + ide
3. Write the name
Dinitrogen tetraoxide
Naming Compound Rules Page 367-368
Compounds with Polyatomic ions
NH4Cl
1. Write the name of the 1st element• NH4 = ammonium
2. Write the root name of the 2nd element• Cl = Chlorine = chlor-
3. Add the suffix –ide to the root name• chlor + ide = chloride
4. Write the name
Ammonium chloride