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The d-And-f-Block Elements
Question
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One among the lanthanoids, Ce(III) can be easily oxidized to Ce(IV) (at. No. of Ce = 58). Explain why?

Answer

Electronic configurationof Ce is 4f1 5d1 6s2.
 Ce(III) having the configuration 4f1 5d0 6s0 can easily lose electron to acquire the configuration 4f0 and form Ce(IV). 

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