I have to write a X and Y subscript.

Question

If I wanted to put Fe(iron II) charge +2 and N (niterogen) -3 how would that subscript look? Im not use if those would even be able to go together. But if not can you help me fine a +2 and -3 charge is be able to turn into a subscript?

Answer 1

I sometimes type them as
Fe++
and
N---
but
Fe+2 and N-3 is used
Fe3N2 is iron nitride
http://www.endmemo.com/chem/compound/fe3n2.php

Answer 2

Oh ok thank you. I only have one more question then I will post all my answers so someone can check my work.

1. How many liters of carbon are produced at STP when 295g of methane gas (C3H8) is reacted with excess oxygen? The other products is water vapor. Write out a balanced equation.

My answer:
C3H8+O—-> CO3+OH8?