Effects of the lanthanoid contraction

Consistent with the increase in size in going from a first row to later metals in a triad, the heavier metals tend to show higher coordination numbers. The common range is 4 to 9 with the highest numbers being especially prevalent for metals in groups 3-5. 

Physical appearance of Soft Hard lustrous Soft shiny Hard lustrous Silver often Hard lustrous Hard lustrous Grey-white Lustrous Soft blue-white  

Physical appearance of Soft silver-white Lustrous silver- Hard shiny Lustrous silver- Silver-grey often Very hard Very hard Lustrous Soft yellow Liquid at 298 K  

Physical appearance of pure metal Soft silver-white Hard lustrous silver-coloured Soft shiny silver-white Hard lusO ous silver-coloured often encountered as grey powder 

Silver often encountered as grey powder Hard lustrous silver-white Hard lustrous silver-white Grey-white malleable and ductile strength increased by cold-working Lustrous silver-white Soft blue-white ductile 

Silver-grey often encountered as grey powder Very hard lustrous blue-white dense Very hard britfle lustrous silver-coloured dense Lustrous silver-coloured malleable ductile Soft yellow malleahle ductile Liquid at 298 K sih coloured 

---