Naming Compounds
 

I have to find the names of these compunds

FeCl2 - Iron Dichloride
TiCl4 - Titanuim Tetrachloride
CoS - Cobalt Sulfide
FeBr3 - Iron(III) Tribromide
NaNO2 - Sodium Nitrate
Li3PO4 - Lithium Phosphate
ICl3 - Iodine Trichloride
Pl3 - ?
SO2 - Sulfide

Are these right?

Red Five

Do you need to find the IUPAC names, or just any old name?

FeCl2 - Iron Dichloride - Correct
TiCl4 - Titanuim Tetrachloride - Correct
CoS - Cobalt Sulfide - Correct but use Cobalt(II)Sulfide
FeBr3 - Iron(III) Tribromide - Incorrect - Iron(III)bromide
NaNO2 - Sodium Nitrate - Correct
Li3PO4 - Lithium Phosphate - Correct
ICl3 - Iodine Trichloride - Correct
Pl3 - ? - Incorrect - Phosphorus(III) iodide
SO2 - Sulfide - Incorrect - Sulfur Dioxide

NaNO2 is sodium nitrate (III) or, more usually sodium nitrite

almost correct
 

Some of the answers are correct, but not all.

Here is what they should be according to IUPAC rules:

FeCl2 - Iron(II) chloride
TiCl4 - Titanium(IV) chloride
CoS - Cobalt(II) sulfide
FeBr3 - Iron(III) bromide
NaNO2 - Sodium nitrite
Li3PO4 - Lithium phosphate
ICl3 - Iodine Trichloride
Pl3 - Phosphorus triiodide
SO2 - Sulfur dioxide

Remember, if you have a metal and non-metal, their charges tell you how many of each there are; therefore you don't say iron dichoride, nor titanium tetrachloride (although I think that is the common name for TiCl4). If you use a metal that has more than one possible charge, you must denote which charge you are using in the name with a Roman numeral. When two different non-metals bond, then you must use prefixes to denote how many of each you have.

"Perhaps the simplest is that used for naming binary substances. This set of rules leads to a name such as iron dichloride for the substance FeCl2; this name involves the juxtaposition of element names (iron, chlorine), their ordering in a specific way (electropositive before electronegative), the modification of an element name to indicate charge (the 'ide' ending designates an elementary anion and, more generally, an element being treated formally as anion), and the use of the numerical prefix 'di' to indicate composition."

Taken from IUPAC Functions and Methods of Chemical Nomenclature (March 2004) - Ingorganic Chemistry.

So naming as Iron Dichloride is perfectly acceptable, as the Di indicates the II.

cant wait to study ingorganic chemistry