Common Compounds

• Scandium Dihydride ScH₂ 
• Scandium Trihidride ScH₃
• Scandium Trifluoride ScF₃
• Scandium Trichloride ScCl₃
• Scandium Triiodide ScI₃
• Discandium Trioxide Sc₂O₃
• Discandium Trisulphide Sc₂S₃
• Discandium Tritelluride Sc₂Te₃

As seen above, many of these examples substantiate the fact that Scandium's most common oxidation state is +3, with the +2 and +1 oxidation states being rarer but nonetheless possible.