Question

The correct formula for magnesium nitrate?

Question 12 options:

MgNO3

Mg2NO3

Mg(NO3)2

Mg2(NO3)2

Answer 1

Mg(NO3)2

Step-by-step explanation:

Look at the charges of the cation and anion. Mg has a +2 charge while NO3 has a -1 charge. You’ll need 2 NO3 molecules to cancel the charge of Mg for a neutral compound. This is how they should be balanced unless they give a total charge in the question.

Answer 2

Mg(NO3)2

Mg is +2 in oxidation while NO3 is -1, so you require two NO3 to have a neutral charge: 0