Question

what are the oxidation state exhibit ed by lanthenoid contrections​

Answer 1

Ytterbium and lutetium has fully filled f-orbital. Lanthanoids exhibit different oxidation states like +2, +3 and +4. Among these +3 is the most stable oxidation state. The elements that attain stable electronic configuration by losing 2 or 4 electrons exhibit +2 and +4 oxidation states.

Answer 2

This effect, which is predominant in the inner transition elements, is called lanthanide contraction. Lanthanide contraction is also responsible for the similarity in size between the second and the third series of transition elements. Oxidation states: Lanthanoids predominantly exist in the oxidation state of +3. hope this is correct