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Although +3 is the characteristic oxidat...

Although `+3` is the characteristic oxidation state for lanthanoids but cerium also shows `+4` oxidation state because

A

it has variable ionisation enthalpy

B

it has a tendency to attain noble gas configuration

C

it has a tendency to attain `f^(0)` configuration

D

it resembles `Pb^(4+)`

Text Solution

Verified by Experts

The correct Answer is:
B, C
(b,c) Both these statements are correct.
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Although +3 oxidation stae is thje characteristic oxidation state of lanthanoids but cerium shows +4 oxidation state also. Why ?

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