TlCl
Thallium chloride
Tl+ balances chloride ions.
What Is the Charge of Thallium?
Thallium commonly forms Tl+ Tl3+ in introductory ionic compounds.
Quick answer: Thallium usually has a common ionic charge of +1 or +3, written as Tl+ or Tl3+.
| Element | Thallium |
|---|---|
| Symbol | Tl |
| Atomic number | 81 |
| Common ionic charge | +1, +3 |
| Common ions | Tl+, Tl3+ |
Why Thallium has this charge
Thallium has common reference charges of +1, +3. Use the compound name and context to distinguish ionic charge from oxidation state.
Thallium charge examples
Tl2O
Thallium oxide
Thallium can form oxides where total positive and negative charge balances.
FAQ
Is Thallium 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.