What is the correct name for the ionic compound, MnF3?

Question

? manganese(III) fluoride
? manganese(II) fluoride
? manganese(I) fluoride
? magnesium(III) fluoride
? fluorine(III) manganate

Answer 1

The correct name for the ionic compound MnF3 is manganese(III) fluoride.

In MnF3, manganese has a +3 oxidation state, which is indicated by the Roman numeral III in the name. The fluoride ion (F) has a -1 charge, and since there are three fluoride ions, manganese must be in the +3 state to balance the overall charge of the compound.