Im having trouble with nameing chemical compounds.?

Question

Okay, so I get that Binary Molecular Compounds use prefixes, like N2O is Dinitrogen monoxide because there are two nitrogen atoms and one oxygen. But ionic compounds are more confusing. So I guess all I know is you just name the metallic element and then have and ide or ite after the non-metal element, but what do you call a compund that has like three symbols? For example: Na2CO3. So I would guess that this is Sodium carbonate Oxide or something, but that can't be right because there can't be three words right? Which do you use and why? Also, H2SO4. Is this Hydrogen Sulfide Oxite? Except Hydrogen is weird, it can be a metal or a non metal can't it? So Im basically really confused, and my textbook isn't much help. How do you name ionic compounds?

Answer 1

You are trying to expand what you do with two elements to cases with three and it doesnt work. That's because the compounds you cite consist of ions that are themselves combinations of elements. For instance Na2CO3 is sodium carbonate. "carbonate" is the name for CO3=. H2SO4 is called sulfuric acid, actually it is an aqueous solution of sulfur trioxide, in water, the sulfate ion, SO4= is formed and the hydrogen ionizes. You should know the common groups encountered in chemistry, such as sulfate(SO4=), sulfite(SO3=), nitrate (NO3-), nitrite (NO2-), ammonium (NH4+), hydroxyl (OH-).

Another problem with nomenclature is that the compounds with two elements have been around for a long time and have picked up "trivial names" that are hard to shake. For example, everyone in the "trade" calls NaHCO3 sodium bicarbonate, when it could be referred to as sodium hydrogen carbonate.

Cheer up, with organic chemicals things are even worse, and they have the IUPAC to drag you away if you screw up the names.

Answer 2

N2O is dinitrogen monoxide because both are non-metals so prefixes are uses (di,tri, tetra....)
Ionic compounds (metal/nonmetal) there is no requirement to put prefixes.
Na2 CO3 is Sodium Carbonate
the CO32- ion is always refered to as carbonate EXCEPT when it is with a single H.
So NaHCO3 would be Sodium bicarbonate (this one is tricky)
H2SO4 is a well known acid called sulfuric acid.
Correct nomenclature can be either dihydrogen sulfate or hydrogen sulfate since hydrogen is classfied in between a metal/non metal and the prefix is optional.
I hope this helps.
so summary- ionic compounds just name the 2 components put the metal first
NaCl= sodium chlorIDE
HF= hydrogen florIDE
FeO= Iron (II) oxide
Fe2O3= Iron (III) oxide

Answer 3

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