1. Forming and Naming Ionic Compounds (Type 1 and 2 Binary Compounds)

2. Ionic Compounds Ionic compounds have 2 naming patterns:
Type 1 binary compounds
The metals only have one cation
Alkali metals, Alkaline Earth Metals, Metals in group 13, 14, 15, 16
A few random transition metals: Zn, Ag
(because they only have one charge)
Type 2 binary compounds
The metals have more than one cation
Transition Metals

3. Cations with only 1 charge
Type 1 Ionic Compounds
Cations with only 1 charge

4. Forming Type 1 Ionic Compounds
4 STEPS FOR BALANCING TYPE 1 BINARY COMPOUNDS
Write the ions with their charge.
Both cation and anion
Balance the charges
Write the neutral compound
Use the naming rules listed in the next slide to name the ionic compound.

5. Forming Type 1 Ionic Compounds
Example – Na and S
Write the ions with their charges
Cation
Na is the metal that is found in group 1
Na forms the cation (Na+)
Anion
S is the nonmetal that is found in group 16
S forms the anion (S-2)

6. Forming Type 1 Ionic Compounds
Balance the charges
(Na+) and (S-2), Are they balanced?
No! Na is +1 and S is -2
+1-2 = -1
How would you balance them?
Multiply (Na+) by 2
(Na+)2 (S-2)
Then drop the charges and the parentheses
Na2S
Write the neutral (balanced) compound
Use the naming rules to write the name of the compound. This will be done later in the PPT.

7. Forming Type 1 Ionic Compounds
Mg and Cl
Write the ions with their charges
(Mg+2) and (Cl-1)
Balance the charges
(Mg+2) (Cl-1)2 +2 (-1)2 = 0 balanced? Yes!
Write the neutral (balanced) compound
MgCl2
Use the naming rules to write the name of the compound. This will be done later in the PPT.

8. Forming Type 1 Ionic Compounds
Zn and O
Write the ions with their charges
(Zn+2) and (O-2)
Balance the charges
(Zn+2) (O-2) +2 (-2) = 0 balanced? Yes!
Write the neutral (balanced) compound
ZnO
Use the naming rules to write the name of the compound. This will be done later in the PPT.

9. Forming Type 1 Ionic Compounds
Al and S
Write the ions with their charges
(Al+3) and (S-2)
Balance the charges (least common multiple…)
(Al+3) (S-2)3 (+3)2 + (-2)3 = 0 balanced? Yes!
Write the neutral (balanced) compound
Al2S3
Use the naming rules to write the name of the compound. This will be done later in the PPT.

10. Forming Type 1 Ionic Compounds
Write the compound formula for Beryllium sulfide.
Is it balanced? Be+2, S-2 YES!
BeS

11. Naming Type 1 Ionic Compounds
RULES FOR NAMING TYPE 1 BINARY COMPOUNDS
The cation is always named first.
The anion is always named second.
A simple cation takes its name from the name of the element.
A simple anion is named by taking the root of the element and adding “-ide”

12. Naming Type 1 Ionic Compounds
Example – Na2S that we formed earlier…
Na is the metal that forms the cation (Na+1)
S is the nonmetal that forms the anion (S-2)
Na is called sodium
S is called sulfur, but the rule says “take the root of the element name and add “–ide”, so it becomes sulfide.
The name would be Sodium sulfide.

13. Naming Type 1 Ionic Compounds
MgCl2 that we formed earlier…
Mg is the metal that forms the cation (Mg+2)
Cl is the nonmetal that forms the anion (Cl-)
Mg is called magnesium
Cl is called chlorine, but the rule says “take the root of the element name and add “–ide”, so it becomes chloride.
The name would be Magnesium chloride.

14. Naming Type 1 Ionic Compounds
ZnO that we formed earlier…
Zn is the metal that forms the cation (Zn+2)
O is the nonmetal that forms the anion (O-2)
Zn is called zinc
O is called oxygen, but the rule says “take the root of the element name and add “–ide”, so it becomes oxide.
The name would be Zinc oxide.

15. Naming Type 1 Ionic Compounds
Al2S3 that we formed earlier…
Al is the metal that forms the cation (Al+3)
S is the nonmetal that forms the anion (S-2)
Al is called aluminum
S is called sulfur, but the rule says “take the root of the element name and add “–ide”, so it becomes sulfide.
The name would be Aluminum sulfide.

16. Naming Type 1 Ionic Compounds
Name MgO
Is it balanced? Mg+2, O-2 YES!
Magnesium oxide

17. Cations with more than 1 charge
Type 2 Ionic Compounds
Cations with more than 1 charge

18. Forming Type 2 Ionic Compounds
5 STEPS FOR BALANCING TYPE 2 BINARY COMPOUNDS
Write the cations with their charge.
Choose the cation that best balances the charge with the anion.
Balance the charges.
Write the neutral compound
Use the naming rules listed in the next slide to name the ionic compound.

19. Forming Type 2 Ionic Compounds
Example – CuCl
Write the cations with their charge.
Cation
Cu is the metal that is found in the transition metals
Cu forms the cations (Cu+1) and (Cu+2)
Choose the cation that best balances the charge with the anion for the given compound.
Anion
Cl is the nonmetal that is found in the halogens (group 17)
Cl forms the anion (Cl-1)
The cation that best balances the anion (Cl-1) for the given compound would be (Cu+1)

20. Forming Type 2 Ionic Compounds
Balance the charges
(Cu+) and (Cl-1), Are they balanced?
Yes! Cu is +1 and Cl is -1
+1-1 = 0
Then drop the charges and the parentheses
CuCl
Write the neutral (balanced) compound
Use the naming rules to write the name of the compound. This will be done later in the PPT.

21. Forming Type 2 Ionic Compounds
Fe2O3
Write the cations with their charge.
(Fe+2) and (Fe+3)
Choose the cation that best balances the charge with the anion for the given compound.
(Fe-3)
Balance the charges (least common multiple…)
(Fe+3) (O-2)3 (+3)2 + (-2)3 = 0 balanced? Yes!
Write the neutral (balanced) compound
Use the naming rules to write the name of the compound. This will be done later in the PPT.

22. Forming Type 2 Ionic Compounds
PbCl4
Write the cations with their charge.
(Pb+2) and (Pb+4)
Choose the cation that best balances the charge with the anion for the given compound.
(Pb+4)
Balance the charges (least common multiple…)
(Pb+4) (Cl-1)4 (+4) + (-1)4 = 0 balanced? Yes!
Write the neutral (balanced) compound
Use the naming rules to write the name of the compound. This will be done later in the PPT.

23. Naming Type 2 Ionic Compounds
RULES FOR NAMING TYPE 2 BINARY COMPOUNDS
The cation is always named first.
The anion is always named second.
A simple cation takes its name from the name of the element.
A Roman numeral is used to represent the charge of the cation. It is placed after the cation name.
A simple anion is named by taking the root of the element and adding “-ide”

24. Naming Type 2 Ionic Compounds
Example – CuCl that we formed earlier…
Cu is the metal that forms the cation (Cu+1)
Cl is the nonmetal that forms the anion (Cl-1)
(Cu+1) is called Copper (I)
Cl is called chlorine, but the rule says “take the root of the element name and add “–ide”, so it becomes chloride.
The name would be Copper (I) chloride.

25. Naming Type 2 Ionic Compounds
Example – Fe2O3 that we formed earlier…
Fe is the metal that forms the cation (Fe+3)
O is the nonmetal that forms the anion (O-2)
(Fe+3) is called Iron (III)
O is called oxygen, but the rule says “take the root of the element name and add “–ide”, so it becomes oxide.
The name would be Iron (III) oxide.

26. Naming Type 2 Ionic Compounds
Example – PbCl4 that we formed earlier…
Pb is the metal that forms the cation (Pb+4)
Cl is the nonmetal that forms the anion (Cl-1)
(Pb+4) is called Lead (IV)
Cl is called chloride, but the rule says “take the root of the element name and add “–ide”, so it becomes chloride.
The name would be Lead (IV) chloride.