Recognise the characteristic properties of transition elements that follow from incomplete d sublevels: variable oxidation states, high melting points, magnetic behaviour, catalytic activity, coloured compounds and complex ion formation with ligands.
Which properties are typical of transition elements? I. Catalytic activity II. Formation of complex ions with ligands III. A single oxidation state in all their compounds A. I and II only B. I and III only C. II and III only D. I, II and III
Anhydrous nickel(II) chloride is yellow, whereas magnesium chloride is white. (i) State nickel's condensed electron configuration. (ii) In terms of electron configuration, state why nickel(II) chloride is a coloured compound. (iii) Nickel(II) chloride absorbs…
Which ion is likely to form a coloured aqueous solution, based on its electron configuration? A. B. C. D.