Question #abb51

1 Answer
Tajadoru
May 30, 2016

#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.

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