Teacher gave us this solubility rules sheet that we are allowed to use on exam but it's kinda confusing to me...

Soluble:
All Nitrates, acetates, ammonium and group I salts.
All chlorides, bromides, and iodides, except silver, lead and mercury (I)
All fluorides except group II, lead (II) and iron (III)
// What is lead (II) and Iorn (III) ?

All sulfates except calcium, strontium, barium, mercury, lead (II) and ag.

// All sulfates meaning SO4, S, SO3? Are there more?

Insoluble:
All carbonates & Phosphates except group I and ammonium.
All hydroxides except group I, Sr, Ba
A

Question

Teacher gave us this solubility rules sheet that we are allowed to use on exam but it's kinda confusing to me... 

Soluble:
All Nitrates, acetates, ammonium and group I salts.
All chlorides, bromides, and iodides, except silver, lead and mercury (I)
All fluorides except group II, lead (II) and iron (III)
// What is lead (II) and Iorn (III) ?

All sulfates except calcium, strontium, barium, mercury, lead (II) and ag.

// All sulfates meaning SO4, S, SO3?  Are there more? 

Insoluble:
All carbonates & Phosphates except group I and ammonium. 
All hydroxides except group I, Sr, Ba
A

anonymous · Answer

All sulfides except group I, II, and NH4
// What are all the sulfides? I just know sulfite SO3

anonymous · Answer

What's the difference between sulfates and sulfides?

chmvijay · Answer

Sulfate is SO4-2 containing compounds and sulfides are S-2 containing compounds
ex Na2SO4 is sulfate , CdS, H2S are called sulfides

chmvijay · Answer

sulfate ion is polyatomic where as sulfide is monoatomic ion

anonymous · Answer

Thanks! Much more sense now.

anonymous · Answer

It's okay, I don't understand this either!