1. Naming Ionic CompoundsCl
Cl -
sodium
sodium
chlorine
chloride
sodium chloride
Photo by Ra’ike

2. Understanding the difference between metals and nonmetals is very important.
Find the dark jagged line on the Periodic Table
On the left side of this line are all of the metals
On the right side of this line are all of the nonmetals

3. + Chemical reactions occur when atoms gain, lose, or share electrons.
Metals
Nonmetals
Metals _____________ electrons.
This gives them a ____ charge.
Positive ions are called ________.
When elements lose electrons and increase their charge, we say that they have been _________.
lose or donate +
cations
oxidized

4. _ Chemical reactions occur when atoms gain, lose, or share electrons.
Metals
Nonmetals
Nonmetals ___________ electrons.
This gives them a ____ charge.
Negative ions are called _______.
When elements gain electrons and lower their charge, we say that they have been ________.
gain/accept _
anions
reduced

5. Metals lose/donate electrons and nonmetals gain/accept electrons
Because of this
metals react with nonmetals to create IONIC COMPOUNDS!
NaCl
Fe3O2
MgBr2
K2S
ZnF2

6. Remember that the charge of an ion can be determined by its place on the Periodic Table.+1 +2 +3 -3 -2 -1 ±4

7. For each elements on your notes, predict the charge of its most common ion using the periodic table.-3 +2 +2 -1 +1 +2 -1 -2 +1 -1 -2 +1 -3 +1 -1

8. Na Na+ Mg Mg+2 Rules for Naming Ions
When metals lose electrons they become ions, but their name does not change. Na
Na+
sodium
sodium Mg
Mg+2
magnesium
magnesium

9. F F - S S -2 Rules for Naming Ions
When nonmetals gain electrons they become ions, and their name does change. F
F -
fluoride
fluorine S
S -2
sulfur
sulfide

10. chlor- + -ide = chloride
Rules for Naming Ions
1. The names of metals do not change.
2. Changing the name of nonmetals:
root of element name ide = name of ion
Examples:
The name of chlorine’s ion:
chlor ide = chloride
The name of nitrogen’s ion:
nitr ide = nitride

11. Examples of naming ions:
The name of calcium’s ion:
calcium
(The names of metals don’t change!)
The name of oxygen’s ion:
ox ide = oxide
The name of aluminum’s ion:
aluminum
(The names of metals don’t change!)

12. Write the name of each of the ions on your notes.
sulfide
lithium
nitride
bromide
potassium
chloride
oxide
hydrogen (+), hydride (-)

13. It is also important that you can identify the names of polyatomic ions. Polyatomic ions are covalently bonded elements that have a charge!

14. Write the name of each of the polyatomic ions on your notes using your reference sheet as a guide.
sulfate
carbonate
permanganate
sulfite
hydroxide
nitrate

15. Steps for Naming Ionic Compounds YOU ARE DONE! It is that easy.
CaBr2
calcium
bromide
Step 1: Write the name of the metal ion.
Step 2: Write the name of the nonmetal ion.
YOU ARE DONE! It is that easy.

16. 1. NaF
2. MgO
sodium
fluoride
magnesium
oxide
3. SrCl2
4. Li2S
strontium
chloride
lithium
sulfide
5. CaO
6. KI
calcium
oxide
potassium
iodide

17. When polyatomic ions are used, simply use the name of the polyatomic ion in the compound.
1. NH4F
2. CaSO4
ammonium
fluoride
calcium
sulfate
3. Mg(NO3)2
4. NaOH
magnesium
nitrate
sodium
hydroxide

18. Name the ionic compounds that are found on your notes.
calcium chloride
potassium sulfide
potassium permanganate
barium oxide
ammonium chloride
cesium chloride
magnesium sulfate
sodium bromide
aluminum phosphide

19. Mg I +2 - MgI2 magnesium iodide
You can also determine the formula of an ionic compound from its name. To do this, you will need to use what you already know about the Periodic Table.
magnesium iodide Mg I +2 -
MgI2
Step 1: Write the symbol and charge of the metal ion using the Periodic Table.
Step 2: Write the symbol and charge of the nonmetal ion using the Periodic Table.
Step 3: Determine the formula from the ions.

20. Sr NO3 +2 - Sr(NO3)2 strontium nitrate
This is just as easy to do with polyatomic ions. You just need to use the table of polyatomic ions found on the naming compounds reference sheet.
strontium nitrate Sr
NO3 +2 -
Sr(NO3)2
Step 1: Write the symbol and charge of the metal ion.
Step 2: Write the formula and charge of the polyatomic ion using your STAAR Reference Sheet.
Step 4: Determine the formula from the ions.

21. N-3 NO3- S-2 SO3-2 P-3 PO4-3 nitrate nitride sulfide sulfite phosphate
Be very careful that you do not mix up the names of ions. This is very common for beginners to naming.
Decide which name goes with each ion.
nitrate
N-3
NO3-
nitride
sulfide
S-2
SO3-2
sulfite
phosphate
P-3
PO4-3
phosphide

22. SO4-2 S-2 SO3-2 N-3 NO2- NO3- Helpful Hint:
If the ion ends in –ide, it is probably from the periodic table. If the ion ends in –ate or –ite, it is a polyatomic ion. If you’re not sure, just check the list to see if it is there!
Examples:
sulfate
sulfide
sulfite
SO4-2
S-2
SO3-2
nitride
nitrite
nitrate
N-3
NO2-
NO3-

23. We know they are positive because metals are always positive.
Remember that the names of transition metals includes their charge because their charges are less predictable.
What are the charges of the transition metals below:
Iron (II) _______ Iron (III) _______
Copper (II) _______ Copper (I) _______
Tin (IV) _______ Tin (II) _______
Lead (II) _______ Lead (IV) _______ +2 +3 +2 +1 +4 +2 +2 +4
We know they are positive because metals are always positive.

24. Fe O +3 -2 Fe2O3 iron (III) oxide
The charges of the transition metals are important when you are determining the formula of an ionic compound.
iron (III) oxide Fe O +3 -2
Fe2O3
Step 1: Write the symbol and charge of the metal ion using the roman numeral given.
Step 2: Write the symbol and charge of the anion.
Step 4: Determine the formula from the ions.

25. Write the formula of each of the ionic compounds named on your notes.KI
SnCl4
BaSO4
NaCl
SrS
CuCO3
AlBr3
Li3N