The chromatogram for solutions containing two metal ions, P and Q, is displayed. P is coloured. A locating agent is used to determine where Q is. The $R_f$ value for each solution is worked out. P is a .....1..... element and has an $R_f$ value .....2..... than that of Q. Which words should be placed in gaps 1 and 2?
Chemistry 0620 · IGCSE · Transition elements