1. Homework 3 due next Wednesday in class
Homework 4 posted- due Wednesday 14 Feb

2. The 3 classes of Binary, Inorganic Compounds
Non-metal + Non-metal (NM+NM=covalent)*
Metal + Non-metal (M +NM =ionic)
Transition Metal + Non-metal (TM+NM=ionic)
* If one of the NM is H and the H+ NM binary is dissolved in water, a separate, special naming process is used since aqueous H +NM= acid (We won’t be learning acid names till later in the course.)

3. TM +NM…almost like M + NM except that you have to specify the TM charge in the name (since TM comes in many flavors of charge) +3 -1
Example: FeCl3
Iron (III)
Chloride

4. Cu O Cu2O2=CuO Copper (II) Oxide -2 +2 2 2
To go backwards from name to formula in TM +NM, we cross the charge as with M + NM using the assigned TM charge in the name.
Example: What is the formula for-
Copper (II) Oxide -2 +2
1) Write down elements in order as they appear in name
Cu O 2 2
2) Write down charges above each
3) Cross charges sans charge to produce formula
Cu2O2=CuO

5. Extension of Stock naming system to Oxyanions
Many elements react with O to form stable,
negatively charged `oxyanions’
Examples:
ClO ClO2-
Hypochlorite Chlorite
ClO3- ClO4-
Chlorate perchloric
Cl-
chloride
SO32- SO42-
Sulfite sulfate
S2O32- S4O62-
Thiosulfate tetrathionate
S2-
sulfide

6. Common Oxyanions: names, formulas, charges (List found at Course website under Laboratory)

7. Oxyanions (OXY) are treated and named just like NM
M +NM
M + OXY
Na+ + Cl-
Na+ + ClO3-
NaCl
NaClO3
Sodium chloride
Sodium chlorate
TM +NM
TM + OXY
Fe3+ + Cl-
Fe3+ + ClO3-
FeCl3
Fe(ClO3)3
Iron(III) chlorate
Iron(III) chloride

8. In-class Board practice with OXYANIONS

9. From Lab Manual Nomenclature Lab

10. What is the correct name for S2F4?
Sulfur fluoride
Sulfur(II) fluoride
Disulfur tetrafluoride
Disulfur tetraflouride

11. What is the correct name for Ca3As2
Tricalcium diarsenide
Calcium arsenide
Calcium (III) Arsenic(II)
Calcium arsenic

12. What is the correct name for ZnO?
Zinc(II) oxide
Zinc monoxide
Zinc oxide
Monozinc monoxide

13. What is the correct formula for Copper(II) Acetate?
Cu(C2H3O2)
Cu2(C2H3O2)
Cu(C2H3O2)2
Cu(C3H2O3)