1.

Conventionalmethodscannotbeusedforseparationofindividual lanthanoid elements beacausetheirpropertiesare quitesimilar. Suggestasuitablemethod fortheirseparation.

Answer»

SOLUTION :Ionexchangemethodcanbeusedtoseparateindividuallanthanoidelements. Themethodisbaseduponthefactthathydratedradiioflanthanoidionsincreasewithincreasingatomicnumbers. THUS,WHENA solutioncontainingamixtureof severallanthanoidionsis passedthrougha COLUMN ofacationexchangeresin, theheavierelementswill COMEOUT firstfrom thecoulumn.


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