Typical Properties

• Many transition elements have ions with different charges, form coloured compounds, and are useful as catalysts
• iron(ii) hydroxide is a green solid
• iron (iii) hydroxide is a brown solid
• iron (ii) oxide is an orange brown solid (rust)
• copper(ii) sulphate is a blue solid
• transition metals are in the centre of the periodic table
• transition metals can have more than 1 ion
• potassium chromate (vi) is yellow
• potassium (vii) manganate is purple
• A nickel based catalyst is used for the hydrogenation of alkenes
• iron catalyst is used in the Haber process