Question

(ii) What are lanthanides ? What is their
most common oxidation state and how
is it formed ? Explain​

Answer 1

Here is your answer☆☆

• Most metals, the lanthanides have a bright silvery appearance. Five of the elements (lanthanum, cerium, praseodymium, neodymium, and europium) are very reactive. When exposed to air, they react with oxygen to form an oxide coating that tarnishes the surfaces.
• When three electrons on the lanthanide atom are used to form compounds in the most stable oxidation state of +3, one of them is taken from the 4f sub-shell.

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@ANGEL