Chem – Naming Ionic Compounds with Polyatomic Ions Part 2

What sections should I know before attempting to learn this section?

—> Covalent, Ionic, and Metallic Bonds

—> Forming Ionic Compounds

—> Breaking Apart Ionic Compounds

—> Introduction to Polyatomic Ions Part 1

 

How do you use an ionic name to create the ionic compound with transition metals?

Now let’s try to reverse the question of the problems. Given the chemical formula come up with the name of the ionic compound with polyatomic ions.

 

Examples: Given the chemical compound, create the name using a regular periodic table. Don’t forget to use the ion periodic table if you need it. You can also refer to the poly atomic ion sheet if you need it.  Ionic Naming With a Polyatomic Ions Examples Video 2.

CsNO3 Caesium Nitrate
Ca(OH)2 Calcium Hydroxide
VCO3 Vanadium (II) Carbonate

 

VIDEO Ionic Naming Demonstrated Example 7: Given the chemical compound, create the name using a regular periodic table. Don’t forget to use the ion periodic table if you need it. You can also refer to the poly atomic ion sheet if you need it.

 

Fe2(CO2)3

 

Step 1:

What is the polyatomic ion?

Answer: CO2

CO2
 1
 1
Total =

 

Step 2:

What is the name of the polyatomic ion?

Answer: Carbonite

 

Step 3:

What is the individual charge of the polyatomic ion?

Answer: -2

CO22-
 1
 1
Total =

 

Step 4:

How many of the polyatomic ions are there?

Answer: 3

CO22-
CO22-
CO22-
Total =

 

Step 5:

What is the total charge of the polyatomic ions?

Answer: -6

CO22-
CO22-
CO22-
Total = -6

 

Step 6:

What is the name for the symbol Fe?

Answer: Iron

Fe CO22-
CO22-
CO22-
Total = -6

 

Step 7:

What is the total charge of the compound?

Answer: +6 -6 = zero

Fe CO22-
CO22-
CO22-
Total = +6 -6

 

Step 8:

How many Fe atoms?

Answer: 2

Fe CO22-
Fe CO22-
CO22-
Total = +6 -6

 

Step 9:

What is the charge of an individual Fe ion?

Answer: +6 / 2 = +3

Fe3+ CO22-
Fe3+ CO22-
CO22-
Total = +6 -6

 

Step 10:

What is the Roman numeral that goes with the iron ion?

Answer: III (because it is +3)

 

Step 11:

What is the complete name of the compound?

COMPLETE ANSWER: Iron (III) Carbonite

 

PRACTICE PROBLEMS: Given the chemical compound, create the name using a regular periodic table. Don’t forget to use the ionic periodic table if you need it. You can also refer to the poly atomic ion sheet if you need it.

LiC2H3O2 Lithium Acetate
BaSO4 Barium Sulfate
Rb2SO3 Rubidium Sulfite
WPO4 Tungsten (III) Phosphate
CoCO3 Cobalt (II) Carbonate
NH4Cl Ammonium Chloride

 

 

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