Questions and Answers
What is the first rule for binary ionic compounds?
What are ternary compounds composed of?
Three elements (one metal and two non-metals)
Write the formula for tin (IV) oxide.
SnO2
Write the formula for potassium sulfate.
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What must you do if a polyatomic ion has a subscript greater than 1?
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What is the name of the compound Cu2S?
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What is the IUPAC name for CF4?
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We NEVER use oxidation numbers for the non-metal when naming binary ionic compounds.
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What is the correct IUPAC name for lead (II) oxide?
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What is the correct formula for magnesium chloride?
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What must the sum of the oxidation numbers for a compound be equal to?
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The correct IUPAC name for Al2(SO4)3 is ____.
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What is the correct formula for sodium sulfate?
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What is the correct formula for titanium (II) oxide?
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What is the correct formula for lead (IV) carbonate?
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What is the IUPAC name for the compound ZnO?
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If possible, you should always simplify the formula for an ionic compound.
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Study Notes
Binary Ionic Compounds
- Composed of ions from two different elements: one metal and one non-metal.
- Naming rules include writing the metal name first, writing the non-metal name with an "ide" suffix, crisscrossing charges, and reducing if necessary.
- Roman numerals are used for the metal to indicate oxidation states.
Ternary Compounds
- Consist of three elements: one metal and two non-metals.
- Naming involves writing the metal name followed by the name of the polyatomic ion.
- The polyatomic ion functions as a stable unit with a charge.
Roman Numerals
- Represent values up to seven as follows: I (1), II (2), III (3), IV (4), V (5), VI (6), VII (7).
Formulas for Specific Compounds
- Tin (IV) Oxide: SnO2
- Potassium Sulfate: K2SO4
- Iron (III) Nitrate: Fe(NO3)3
Assigning Charges
- New charges for elements in compounds are placed at the bottom of the element symbol.
Polyatomic Ions
- If a polyatomic ion has a subscript greater than one, enclose the ion in parentheses and indicate the new charge at the bottom.
Naming Compounds
- Cu2S: Copper(II) Sulfide
- Mn(NO3)3: Manganese Nitrite
- FePO4: Iron(III) Phosphate
- CoCr3: Cobalt(III) Carbonate
Binary Molecular Compounds
- Composed of two non-metals.
- First element retains its name; prefixes denote the number of atoms for the second element.
- The name of the second element has the "ide" suffix.
Prefixes for Molecular Compounds
- Mono (1), Di (2), Tri (3), Tetra (4), Penta (5), Hexa (6), Hepta (7), Octa (8), Nona (9), Deca (10).
Specific Compound Names
- N2O5: Dinitrogen Pentoxide
- CF4: Carbon Tetrafluoride
- NO2: Nitrogen Dioxide
- PCl5: Phosphorus Pentachloride
- Cl2O7: Dichlorine Heptoxide
- P4O6: Tetraphosphorus Hexoxide
Applications of Oxidation Numbers
- Oxidation numbers for non-metals are not used when naming binary ionic compounds.
- The sum of oxidation numbers in a compound must equal zero.
IUPAC Naming and Formulas
- PbO2: Lead(IV) Oxide
- Al2(SO4)3: Aluminum Sulfate
- CrCO3: Chromium(II) Carbonate
- Na2SO4: Sodium Sulfate
- TiO: Titanium(II) Oxide
- MgCl2: Magnesium Chloride
- AlBr3: Aluminum Bromide
- SnS2: Tin(IV) Sulfide
- FeCl3: Iron(III) Chloride
- PbO: Lead(II) Oxide
- Mg3(PO4)2: Magnesium Phosphate
- SO4-2: Sulfate ion with a charge of -2.
Chemical Formulas
- Nickle(II) Chloride: NiCl2
- Ammonium Sulfate: (NH4)2SO4
- Magnesium Nitride: Mg3N2
- Mercury(I) Sulfide: Hg2S
- Carbon Monoxide: CO
- Calcium Phosphate: Ca3(PO4)2
Names from Formulas
- Na2S: Sodium Sulfide
- NH4Cl: Ammonium Chloride
- CuF: Copper(I) Fluoride
- CuF2: Copper(II) Fluoride
- PbSO4: Lead(II) Sulfate
- Hg(NO3)2: Mercury(II) Nitrate
- Al2O3: Aluminum Oxide
- N2O4: Dinitrogen Tetroxide
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Description
Test your knowledge on binary and ternary ionic compounds. This quiz covers naming rules, the use of Roman numerals, and formulas for specific compounds. Perfect for students seeking to strengthen their understanding of ionic compounds and polyatomic ions.
