Question

FAN AND MEDAL!

Reaction between iron and oxygen help? One question.

1. Write a balanced equation for the reaction between iron (Fe+3 as an ion) and oxygen(O-2 as an ion).

Fe+O2->

Help is much appreciated.

Answer 1

This is what my chemistry teacher showed me. It's just crossing the charges to get the product of your reaction.

Answer 2

Oh wow, it's that simple? Thanks so much!

Answer 3

Yup. When my teacher showed me this, it made things SO much easier. Do you need a hint for knowing what the charge is for an element?

Answer 4

Yes that would be awesome. :)

Answer 5

For the positive charges, it is just their group number. (Li is in Group 1 = +1, Al is in group 13 = +3)

For the negative charges, you count from the noble gases to the left. (F is one group to the left of Group 18 = -1, Se is two groups to the left of Group 18 = -2)

With of course the exceptions, but you probably don't need to know those right now.

Answer 6

This sounds pretty familiar. I'll get to rereading. Thanks so much for your help!

Answer 7

You're very welcome!

Answer 8

transition metals (from Groups 3-12) have varied charges, so some of those you'll have to just memorize. @sunnysunshine 's trick works almost perfectly, but for only a small selection of elements