Ionic Formulas
Covalent Formulas
Ionic Nomenclature
Covalent Nomenclature
Wild Card
100
Sodium Bromide.
What is NaBr?
100
Sulfur Dioxide.
What is SO2?
100
BeF2.
What is Beryllium Fluoride?
100
Dihydrogen Monoxide.
What is H2O?
100
This type of compound is named by writing the metal first, followed by the nonmetal with its ending changed to “-ide.”
What is Ionic Bonding?
200
Calcium Chloride.
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What is CaCl2?
200
Carbon Monoxide.
What is CO?
200
KI.
What is Potassium Iodide?
200
SeF6.
What is Selenium Hexafluoride?
200
Prefixes like di-, tri-, and tetra- are used when naming this type of compound made of two nonmetals.
What is a Covalent Bond?
300
Iron (II) Oxide.
What is FeO?
300
Bromine Trifluoride.
What is BrF3?
300
Sr(ClO2)2.
What is Strontium Chlorite?
300
N2O4.
What is Dinitrogen Tetroxide?
300
This type of ion keeps its name when forming an ionic compound and is positively charged, while the other type changes its ending to “-ide.”
What is a cation?
400
Chromium (IV) Oxide.
What is CrO2?
400
Dinitrogen Tetroxide.
What is N2O4?
400
TiO.
What is Titanium (II) Oxide?
400
S2Cl2.
What is Disulfur Dichloride?
400
Roman numerals are required in the names of ionic compounds when the metal belongs to this category of elements with multiple possible charges.
What are transition metals?
500
Magnesium Arsenite.
What is Mg3(AsO3)2?
500
Diboron Hexahydride.
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What is B2H6?
500
Co(NO3)3.
What is Cobalt (III) Nitrate?
500
Cl2O7.
What is Dichlorine Heptoxide?
500
This is the only situation in which a compound that contains only nonmetals is not named with covalent prefixes, because the compound acts like an ion that always has the same charge.
What is when the compound is Ammonium (NH4)+?