Balanced Equation for Mg + Pb(NO3)2?

Question

Balanced Equation for Mg + Pb(NO3)2, I got something like this: +Pb(NO3)2 --> Mg(NO3)2 + Pb.

But i Don't get how Mg(NO3)2 is balanced. It makes it look like the molecule has a -2 charge help please :)

Answer 1

Mg => Charge = +2

NO3- => Charge = -1

Mg(NO3)2 => +2 -1 - 1 = 0

It is balanced

Answer 2

You got the equation right.

(NO3) is an -1 charged anion.

Mg is a +2 charged cation.

Mg needs 2 ( NO3) to balance the charge

Mg ------ NO3

+2 -------- -1

Mg ------- 2(NO3)

= Mg(NO3)2  

Answer 3

Mg has a charge of +2 because it is in group two in the periodic table. The NO3 has a -1 charge. so you basically cross multiply:

Mg        NO3

+2         -1

= Mg(NO3)2

its saying that to every Mg, there are two NO3's.