iron (II) nitrate and iron (III) nitrate?

Question

Whats The Diffrence?!
++ What is the significance of the Roman numerals?

Answer 1

Roman numeral is required to specify the charge on the cation. The charge on a cation is typically +1, +2, or +3. The majority of metals have a cation with a +2 charge, although some can exist in different forms. For example, iron exists as both a +2 and a +3 cation. The characteristics of the +2 and +3 form are slightly different. Iron nitrate can be found as iron (II) nitrate or iron (III) nitrate, the former being green in color while the latter is pale violet.

Answer 2

Iron Iii Nitrate

Answer 3

Iron is multivalent, which essentially means that it can exist as different ions. The roman numerals indicate what kind of charge iron has here.

Iron (II) Nitrate: This means that iron has a +2 positive charge:
Fe 2+

Thus the compound is Fe (NO3)2

Iron (III) Nitrate: Here, iron has a +3 positive charge:
Fe 3+

So the compound is Fe (NO3)3

Answer 4

The difference is in the Iron ion in the compound.

The Roman numerals indicate the oxidation number (and charge) on the Iron ion since Iron is a transition metal with multiple common charge possibilities.

Iron (II) Nitrate contains the Iron +2 ion, Fe+2, and the chemical formula can be written as: Fe(NO3)2, since the Nitrate ion (NO3-) has a negative one charge so in order to balance out the Iron’s charge, two Nitrates are needed to create an overall neutral compound.
Iron (III) Nitrate contains the Iron +3 ion, Fe+3, and its chemical formula can be written as Fe(NO3)3. Due the Iron’s +3 charge, 3 Nitrates are needed to balance it out.

In the older nomenclature of naming ionic compounds, instead of using the roman numerals, they would use suffices / variants on the element’s name.
Iron (II) Nitrate could be said as “Ferrous” Nitrate, and
Iron (III) Nitrate could be said as “Ferric” Nitrate.
The “-ous” and “-ic” suffixes indicate the charge on the Iron ion (with respect to its possible oxidization numbers) but do not indicate a specific numeric value since these same endings can be used on other elements/ion to indicate other charges.
The roman numeral system is much easier in this respect to indicate the chares on specific ions.

Answer 5

It signifies how many electrons are in the outer shell for transition metals. When written correctly it looks like
Fe(NO3)2=iron(II) nitrate
and Fe(NO3)3=iron(III) nitrate

I hope that helps

Answer 6

Look up Stock nomenclature, or similar

Answer 7

they differ in oxidation state.Roman numerals indicates oxidation state