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You don't without having additional information. If you were given this compound Fe2O3, you would first recognize that oxygen most likely has a 2 minus charge associated with it, since there are three oxygens, that would be a total of 6 minus. The irons must neutralize that 6 minus by having a total of 6 plus. Since there are two irons each one must have a 3 plus charge associated with it.

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Q: How do you know that Fe has a net charge of 3 plus?
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Related questions

Iron ions with a plus 2 or plus 3 charge are called?

Fe 2+ is Ferrous Fe 3+ is Ferric


What will convert Fe plus 3 to Fe plus 2?

fe+3=..............* .9 =fe+2


Is an oxidation half-reaction A. Fe2 plus Fe3 plus plus e- B. Fe3 plus plus e- Fe2 plus C. Fe(s) Fe(l) D. Fe plus 2e- Fe2 plus?

A. Fe^2+ ==> Fe^3+ + e- is an oxidation reactionB. Fe^3+ +e- ==> Fe^2+ is a reduction reactionC. Fe(s) ==> Fe(l) is neither an oxidation nor a reduction reaction. It is a phase change.D. Fe + 2e- ==> Fe^2+ is not a possible reaction.


What is the definition of net atomic charge?

The net charge is the charge that there is more of in an object. For example, if an object has 5 electrons (negative charges) and 4 protons (positive charges), then the net charge is negative because there are more electrons in the object. If the object gains 2 protons through the transfer of electric charge then the net charge becomes positive. However, if the object loses 1 proton to have an equal amount of both protons and electrons, then the net charge becomes nuetral.


What species is reduced in the reaction Fe plus AgNo3 plus Fe(No3)3 plus Ag?

Ag+


Iron ions with a positive 2 charge and a positive 3 charge are called what?

Fe 2+ is Ferrous Fe 3+ is Ferric


What is the formula for Fe plus 3?

This is the ion Fe(3+).


Net ionic equation for Iron nitrate and ammonia?

Fe(NH4)3 but b sure to make the numbers subscript


What is iron hydroxide plus nitric acid?

Iron Oxide is Fe[2]O[3] and Nitric acid is HNO[3]


Is the charge of each iron ion in the ionic compound FeS is fe2 plus?

Sulfides have a minus 2 charge, so the iron in iron sulfide has a charge of +2.


When FeO4 plus Al Al2O3 plus Fe is balanced what is the coefficient of Fe?

3FeO4 + 8Al --> 3Fe + 4Al2O3


When naming transition metals that can have more than one charge the charge is indicated by what?

This indication is in parenthesis, with Latin numerals: Fe(II), Fe(III).