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| 1. |
Conventionalmethodscannotbeusedforseparationofindividual lanthanoid elements beacausetheirpropertiesare quitesimilar. Suggestasuitablemethod fortheirseparation. |
| Answer» SOLUTION :Ionexchangemethodcanbeusedtoseparateindividuallanthanoidelements. Themethodisbaseduponthefactthathydratedradiioflanthanoidionsincreasewithincreasingatomicnumbers. THUS,WHENA solutioncontainingamixtureof severallanthanoidionsis passedthrougha COLUMN ofacationexchangeresin, theheavierelementswill COMEOUT firstfrom thecoulumn. | |