What is the most common oxidation state for actinoids?

Oxidation state:

• "The oxidation state of an element in a compound ascertained according to a set of rules formulated on the basis that electron pair in a covalent bond belongs entirely to a more electronegative element."

Oxidation states of Actinoids:

• Actinoids are metallic chemical elements with atomic numbers from $89$ to $103$.
• Actinides exhibit larger oxidation states than lanthanides due to small gaps between subshells.
• The most common oxidation state of actinoids is $+3$.