Which method of refining will you suggest for an element in which impurities present have chemical properties close to the properties of that elements?

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the statioary phase is selected in such a way that the impurities are more stongly adsorbed or are more soluble In the stationaary phase than component to be purified thus ,when the column is extracted , the impurities will be retained by the statioary phase while the pure component is easily eluted.

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