Question

What are lanthanoid contraction..?? Write the general oxidation state of actinoids.... ​

Answer 1

Answer:

Lanthanides exhibit the oxidation state of +3. Some of them also exhibit the oxidation state of +2 and +4.

Answer 2

Answer:

Lanthanoid contraction, also called lanthanide contraction, in chemistry, the steady decrease in the size of the atoms and ions of the rare earth elements with increasing atomic number from lanthanum (atomic number 57) through lutetium (atomic number 71).

Explanation:

+3

+3 oxidation state: +3 state is a general oxidation state for most of the actinides.