RbCl
Rubidium chloride
Rb+ balances chloride ions.
What Is the Charge of Rubidium?
Rubidium commonly forms Rb+ in introductory ionic compounds.
Quick answer: Rubidium usually has a common ionic charge of +1, written as Rb+.
| Element | Rubidium |
|---|---|
| Symbol | Rb |
| Atomic number | 37 |
| Common ionic charge | +1 |
| Common ions | Rb+ |
Why Rubidium has this charge
Rubidium is an alkali metal, so it commonly loses one electron and forms a +1 ion.
Rubidium charge examples
Rb2O
Rubidium oxide
Rubidium can form oxides where total positive and negative charge balances.
FAQ
Is Rubidium 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.