Question

which of the following oxidation state is common for all lantanoids ? option is 1. +2 , 2. +3 , 3. +4 , 4. +5​

Answer 1

Answer:

Your Answer is +3

Explanation:

The common stable oxidation state of all the lanthanides is +3. It is attained by removing outermost 2 electrons of 6s electrons and 1 electron from 4f electrons. It is due to high energy difference in 4f and 6s, it is difficult to remove more electrons from 4f sub-shell.

I hope this answer is helpful for u!