Please help if u can ty..

a)

b)

c)

d)

e)

Explanation:

The charges of the ions have to be 0, so they balance.

a) has the charge of +2 and has the charge of -1. So its . That means you need one and two to balance the equation. ->

b) has the charge of +4 and has the charge of -1. So its . That means you need one and four to balance the equation. ->

c) has the charge of +3 and has the charge of -2. So its . That means you need two and three to balance the equation. ->

d) has the charge of +2 and has the charge of -2. So its . That means you need one and one to balance the equation. ->

e) has the charge of +1 and has the charge of -3. So its . That means you need three and one to balance the equation. ->

the answer is b & c i believe : )