Describe the transition elements as metals that: (a) have high densities (b) have high melting points (c) form coloured compounds (d) often act as catalysts as elements and in compounds

Describe the formation of covalent bonds in simple molecules, including ( H_2 ), ( Cl_2 ), ( H_2O ), ( CH_4 ), ( NH_3 ) and HCI. Use dot-and-cross diagrams to show the electronic configurations in these and similar molecules

Identify representations of alloys from diagrams of structure