Question

Question #abb51

Answer 1

`Mg(NO_3)_2`

Explanation:

First you want to look at the charges of both of those atoms. You can easily obtain those from a periodic table, but nitrate, is a polyatomic ion, so if you haven't memorized a bunch of those already, then I recommend you do so.

`Mg` ion has a charge of `+2`
`NO_3^-` (nitrate) has a charge of `-1`

Question now is how will you make those charges balance?
*Really simple math:

`2-1+x=0`
`x=-1`

This step is really unnecasary but if it clarifies the problem, then that's up to you!

Now you need another nitrate atom to balance the charge, thus:
You will have 2 nitrates for every magnesium...

`Mg(NO_3)_2`

Brackets are used to indicate `N` and `O` count as one atom.