beyond me.......?

Question

1.For more practice with naming ionic compounds complete the chart below.
Cation (+)Ion (-) Chemical Formula Name
NH4+ CO32-
Li+ S2-
Na+ Cl-
Ca2+ PO43-
Ba2+ F-
Ag+ NO3-
Fe2+ Br -
Fe3+ SO42-
Al3+ CO32-
Pb2+ OH-
2.How can you determine if a cation has more than one positive charge? (HINT: take a look at the Periodic Table of Elements)

Hah if I had a class to pay attention to I would. You being homeschooled is pretty much slef taught. so lay off

Answer 1

What the other people said, but you do have to conside the charges. CO3(-2) has a charge of -2 where NH4(+) only has a charge of +1. So in that case you would have to do 2 NH4+'s for every 1 CO3-2. So that one would be (NH4)2(CO3) (called ammonium carbonate). What ends up happening is you just have to imagine the charge on one as the subscript (the little number below it to show how many) of the other one. So, for example, Fe+3 and SO4-2 is going to end up as Fe2(SO4)3. See? Also, for that one, you may need to know that that's Iron III, because its charge is 3. Iron III Sulfate.

Li2S
NaCl
Ca3(PO4)2
BaF2
AgNO3
FeBr2
Fe2(SO4)3
Al2(CO3)3
Pb(OH)2

Second question: There are 2 meanings I'm getting from this question. One is that they're asking how you know if the charge is more than +1. You know it's more than +1 if it's in groups 2A or 3A. The groups tell you the charge. (at 4 they switch over and are sometimes -4 so there's no way to know). Also, most metals will have a charge over +1 (except Ag and Cu).
The second meaning I'm getting is "how do you determine whether a cation has the possibility of having more than one positive charge". In that case, there's really no other way to know, except that most metals do have 2 different possible charges.

Answer 2

ammonium carbonate
lithium sulfide
sodium chloride
calcium phosphate
barium fluoride
silver nitrate
ferrous bromide (also iron(II) bromide)
ferric sulfate
aluminum carbonate
plumbous hydroxide (also called lead(II) hydroxide

2. Actually one cannot. How could one know that lead can have +2 and +4 oxidation numbers? It's the inert pair effect. How is a pupil to know that? Similarly for iron(II) and iron(III) ferrous, ferric salts?

Answer 3

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Answer 4

its not really that hard with the naming and i feel bad that u dont know and have to come here for help on homework. u obviously dont pay attention in class. anyways in ionic coumpounds it goes like this ex. NaCl
na= sodium ( the first part stays same in name) so the first part is sodium. Cl=chlorine ( the second part's end is replaced with -ide) chloride . sodium chloride ta da

Answer 5

ammonium trioxocarbonate

lithiumsulphide

sodium chloride

calcium tetraoxophosphide

bariumfloride

silver trioxonitride

iron[ii]bromide

iron(iii)sulphide

aluminiumtrioxocarbonate

lead(ii)hydroxide