Method 2 - "ous' and "ic" method (Classical System) 1. In some cases, the latin name for the element is used: iron:

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Method 2 - "ous' and "ic"method (Classical System)
1. In some cases, the latin name forthe element is used:
iron: ferrous (valence = 2+) and ferric (valence = 3+)
gold: aurous (valence =1+) and auric (valence = 3+)
copper: cuprous (valence =1+) and cupric (valence = 2+)
tin: stannous (valence =2+) and stannic (valence = 4+)
lead: plumbous (valence =2+) and plumbic (valence = 4+)
cobalt cobaltous (valence =2+) and cobaltic (valence = 3+)
nickel nickelous (valence =2+) and nickelic (valence = 3+)
mercury mercurous (valence =1+) and mercuric (valence = 2+)
platinum platinous (valence=2+) and platonic (valence = 4+)
2. Some elements having more than twovalence values or oxidation states use specific values forthe "ous" and the "ic".
chromium ous = 2+ ic =3+
manganese ous = 2+ ic =3+
bismuth ous = 3+ ic = 5+
Examples:
stannouschloride SnCl2
manganousfluoride MnF2
Exercise:
For all exercises you will give thename if formula provided and the formula if the name isprovided.
1) ferricoxide _________________
2) cuprousfluoride _________________
3) stannicfluoride _________________
4) antimonoussulfide _________________
5) cupric bromide _________________
6)NiI2 _____________________
7)HgBr _____________________
8)CoCl3 _____________________
9)Pb3N4 _____________________
11) stannicoxide _________________
10) nickelousfluoride _________________
11) cuprousnitride _________________
12) auricchloride _________________
13) cupricsulfide _________________
14) Pt02 _____________________
15)Ni4C3 _____________________
16)Au2S _____________________
17)PbCl4 _____________________
Part 4: Hydrates