Naming Compounds Ionic and Covalent

First thing first… Determine if the compound is Ionic or Covalent. Ionic = Metal + Nonmetal Covalent = Nonmetal + Nonmetal

Metal vs Nonmetal Nonmetals Metals

Metal vs Nonmetal Nonmetals Metals

Metal vs Nonmetal Nonmetals Metalloids Metals

Ionic: Binary (2 elements) Positive ion + Negative ion Change ending to “ide”

Ionic Naming Subscripts have no affect on the name. Example: NaCl = Sodium Chloride CaCl2 = Calcium Chloride

Transition Metals Roman Numerals are used to indicate the CHARGE of transition metals. 1 I 2 II III 4 IV V VI VII VIII IX X

Transition Metal Example Charge of Nickel (+3) Nickel (III) Sulfide Charge of Sulfur (-2) +3 -2 Ni2S3

Polyatomic ions An ion containing more than one atom.

Polyatomic ion Families

Common Polyatomic Ions NH4+ ammonium CN- cyanide OH- hydroxide NO3- nitrate NO2- nitrite SO4-2 sulfate SO3-2 sulfite PO4-3 phosphate ClO3- chlorate MnO4- permanganate CO3- carbonate

Memorizing Polyatomics OH NO SO CO PO -1 -1 -2 -2 -3 3 4 3 4 hydroxide nitrate sulfate carbonate phosphate

Using polyatomics +2 +3 Magnesium Phosphate Mg PO4 Mg3(PO4)2

What to remember about ionic compounds End in “ide” Transition metals Roman Numeral indicates charge Polyatomic ions

Try a few Ionic Compounds K3N __________________ CuOH __________________ FePO4 __________________ MgO __________________

Try it the other way Vanadium (III) sulfide _______ Manganese (II) phosphate _______ Sodium oxide _______ Lithium Fluroide _______

Covalent Naming Know your prefixes 1 Mono 2 Di 3 Tri 4 Tetra 5 Penta 6 Hexa 7 Hepta 8 Octa 9 Nona 10 Deca

diphosphorous trioxide Use the prefixes The prefix indicates the number of atoms of the element Change the ending of the second compound to “ide” Ends in “ide” diphosphorous trioxide 2 Phosphorous atoms 3 Oxygen atoms

Use the prefixes Carbon dioxide If the first element is singular do not use the mono prefix. Ends in “ide” Carbon dioxide 1 Carbon atoms 2 Oxygen atoms

Use the prefixes Carbon monoxide If the second element is singular you must use the mono prefix. Ends in “ide” Carbon monoxide 1 Carbon atoms 1 Oxygen atom

Try a few Covalent Compounds NF3 ___________________________ Si2Br6 ___________________________ N2O3 ___________________________ ClO2 ___________________________ CF4 ___________________________

Try it the other way now Hexaboron Silicide ______________ Dihydrogen monoxide ______________ Iodine pentafluoride ______________ Phorsphorous triiodide ______________ Carbon tetrachloride ______________

YAY! You are now an expert at naming compounds 