1) ZnSO4 would it be Zn(SO4)

Question

does the polyatomic ion always have to have ( ) ?

2) Is Ba(SO4) right?
since Ba is 2+ and SO4 is 2- right?

3) In a net ionic equation for BaCI2 would it become Ba ^(2+) + 2CI or Ba ^(2+) + CI2 ?

Answer 1

For #2 did I write it correctly?

Answer 2

Also would Sr3(PO4)2 be right?

Answer 3

1) ZnSO4 would it be Zn(SO4)
does the polyatomic ion always have to have ( ) ?
Parentheses are required ONLY when the subscript for SO4 is not 1. In ZnSO4 the parentheses are not needed.

2) Is Ba(SO4) right?
since Ba is 2+ and SO4 is 2- right?
Yes, Ba(SO4) is right but the parentheses are not needed.

3) In a net ionic equation for BaCI2 would it become Ba ^(2+) + 2CI or Ba ^(2+) + CI2
I think you mean BaCl2 (barium chloride) since I am not familiar with CI2. The ionization of BaCl2 is to Ba^+2 and 2Cl^-

Answer 4

Cl is chlorine. That is a "see""ell" and not a "see""eye".