Na3As
sodium arsenic compound
Sodium ions can balance As3- in simple ionic examples.
What Is the Charge of Arsenic?
Arsenic commonly forms As3- As3+ As5+ in introductory ionic compounds.
Quick answer: Arsenic usually has a common ionic charge of -3 or +3 or +5, written as As3- or As3+ or As5+.
| Element | Arsenic |
|---|---|
| Symbol | As |
| Atomic number | 33 |
| Common ionic charge | -3, +3, +5 |
| Common ions | As3-, As3+, As5+ |
Why Arsenic has this charge
Arsenic has common reference charges of -3, +3, +5. Use the compound name and context to distinguish ionic charge from oxidation state.
Arsenic charge examples
CaAs2
calcium arsenic compound
Calcium ions can balance common negative Arsenic ions.
FAQ
Is Arsenic 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.