Element charge lookup

What Is the Charge of Fermium?

Fermium commonly forms Fm3+ in introductory ionic compounds.

Quick answer: Fermium usually has a common ionic charge of +3, written as Fm3+.
ElementFermium
SymbolFm
Atomic number100
Common ionic charge+3
Common ionsFm3+

Why Fermium has this charge

Fermium is an actinide. Its chemistry can be specialized, but +3 is the most useful introductory reference range.

This is a classroom reference range, not an exhaustive list of all oxidation states.

Fermium charge examples

FmCl3

Fermium chloride

Fm3+ balances chloride ions.

Fm2O3

Fermium oxide

Fermium can form oxides where total positive and negative charge balances.

FAQ

Is Fermium charge the same as oxidation state?

Ionic charge is the charge on an actual ion. Oxidation state is a bookkeeping number used inside compounds. They can match, but they are not always the same thing.

How do I use this in formulas?

Combine positive and negative ions so the total charge is zero. You can also use the ionic compound calculator.

Sources and data notes

More element charges