1. Day 8 – Ionic compounds with transition metals
Sci 10 Chemistry

2. Ionic compounds with a transition metal:
Many of the transition metals (in the centre of the periodic table) are able to form more than one cation.
i.e.:
Copper can form the cations Cu 1+ , and Cu 2+
Iron can be Fe 2+ or Fe 3+

3. Roman Numerals *on the back of your periodic table!
II = 2
III = 3
IV = 4
V = 5
VI = 6

4. Ionic compounds with transition metals –Nomenclature (naming)
Name to formula:
i.e. : copper (I) chloride
Write the elements’ symbols
Make a table and draw circles with the charges of each ion. (The charge for the transition metal is given in brackets in the name)
If the charges cancel (add to zero), you are done  The formula is:
CuCl

5. Ionic compounds with transition metals –Nomenclature (naming)
If the charges do not add to zero:
i.e. : iron (II) chloride
Fe Cl
Keep adding atoms until they do
FeCl2

6. The charges add to zero so the answer is:
Give it a try!
What is the formula for:
osmium (II) sulfide
Os S
2+ 2-
The charges add to zero so the answer is:
OsS

7. Give it a try! What is the formula for: nickel (III) fluoride
Don’t forget that the III (3) in the brackets tells us the charge of nickel
Ni F
3+ 1-

8. Ionic compounds with transition metals –Nomenclature (naming)
Formula to name:
The charge of the transition metal is written in brackets using Roman numerals if there is more than one possible charge
i.e. Fe2O iron… (II or III?)
Make the table and find out the charge of the transition metal
Write the name of the cation (+)
Write the charge next to the name of the cation in brackets (use Roman numerals)
Write the name of the anion with the ending –ide.
iron (III) oxide

9. Give it a try! Mn3F6 The name is: manganese …. (II or IV?)
Manganese(II) fluoride

10. Ionic compounds with transition metals –Nomenclature (naming)
PbO2
lead… (II or IV?)
Lead (IV) oxide

11. Careful! We NEVER use Roman numerals for metals with one charge!
Look at your Periodic Table: Which transition metals only ever have ONE charge?
Scandium, zinc, silver, etc.
Do NOT use Roman numerals for these metals!
Ex: ZnO

12. To do:
Day 8 Practice– Ionic Compounds with a Transition Metal