7.1

Binary Ionic Compound (BIC) -ionic compound made up of two ions

To name cation – use name of atom Na+ = sodium K+ = potassium Ca2+ = calcium Ba2+ = barium

To name anions, use the atom’s base name and –ide at the end

Cl- = Chloride S2- = Sulfide P3- = Phosphide O2- = Oxide KBr = Potassium bromide Mg3N2 = Magnesium nitride

FrF SrBr2

Li2Se

1. Write the symbol and charge of each ion side by side (cation first)

2. If total = 0, just write symbols & you are done!

3. If total does not = 0, criss cross charges to have overall 0 charge

Magnesium sulfide

Rubidium Oxide

Strontium Bromide

Aluminum Oxide

If cation has multiple charges, use a roman numeral to indicate charge

Cu+ =Copper (I) Cu+2 =Copper (II) I = 1 II = 2 III = 3 IV = 4 V = 5 VI= 6 VII = 7 VIII = 8 IX = 9 X = 10

The charge on ionic compounds has to be electrically neutral

Figure out overall charge on anion and then determine what charge cation has to be

CuCl2 ~Each Cl has a charge of -1 (needs 1 e-) and since there are 2 of them, the overall charge of Cl is -2. Cu must be +2 = Copper (II) chloride

PbO2 Charge on O is -2 and there are 2 of them so overall on O is -4.

Pb has to be +4 Lead (IV) oxide

CuO Hg2O Cu2O Vanadium (III) Iodide Platinum (IV) oxide

Polyatomic Ion – an ion made of 2 or more atoms that behave like a single ion

Bonded covalently Bond ionically with other

simple ions as salts

Name the ion that is not a polyatomic like simple cations or anions and then name the polyatomic as the chart says

NaOH = Sodium hydroxide CaCO3 = Calcium carbonate

AlPO3

LiSCN FeSO4

Mn(Cr2O7)2

Determine charge of overall polyatomic and then the other ion.

Follow same rules as before. Beryllium cyanide Copper (II) nitrate

Barium sulfide Potassium oxalate Chromium (III) cyanide Vanadium (V)silicate

Name changes as number of O changes

Gain 1 O = perchlorate ClO4-

Base Name = chlorate ClO3-

Lose 1 O = chlorite ClO2-

Lose 2 O = hypochlorite ClO-

The name usually starts with the word hydrogen, but use mono- and di-

HPO4 –monohydrogen phosphate

H2PO4 – dihydrogen phosphate Thio – replace O with S K2S2O3 – Potassium thiosulfate

Inorganic molecular compounds

Specify # of each type of atom P4O6 – Tetraphosphorus hexoxide

P4O10 – Tetraphosphorus decoxide

MonoMono 11

DiDi 22

TriTri 33

TetraTetra 44

PentaPenta 55

HexaHexa 66

HeptaHepta 77

OctaOcta 88

NonaNona 99

DecaDeca 1010

If there is 1 of the first element, mono is omitted from the word

CO – carbon monoxide CO2 – carbon dioxide

1st element – named 1st – usually least e-neg

2nd element – named 2nd – usually most e-neg – add ide ending

Drop vowels o and a from prefix before adding it to a root that starts with a vowel

N2O4 – Dinitrogen tetroxide SF6 – Sulfur hexafluoride Some common names are

used instead of technical name

H2O – water – not dihydrogen monoxide