1.

Whichone of the followingstatementsrelated tolanthanons isincorrect ?

Answer»

Europiumshow + 2oxidation STATE.
Thebasicitydecreasesas theionicradiusdecreasesfromPr to LU .
All the lanthanonsare muchmorereactivethanaluminium.
`CE^(4+)` solutionare widelyusedasoxidisingagentsin volumetricanalysis .

ANSWER :C


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