FrCl
Francium chloride
Fr+ balances chloride ions.
What Is the Charge of Francium?
Francium commonly forms Fr+ in introductory ionic compounds.
Quick answer: Francium usually has a common ionic charge of +1, written as Fr+.
| Element | Francium |
|---|---|
| Symbol | Fr |
| Atomic number | 87 |
| Common ionic charge | +1 |
| Common ions | Fr+ |
Why Francium has this charge
Francium is an alkali metal, so it commonly loses one electron and forms a +1 ion.
Francium charge examples
Fr2O
Francium oxide
Francium can form oxides where total positive and negative charge balances.
FAQ
Is Francium 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.
Where can I see the full chart?
Use the periodic table with charges or the ionic charges chart.