Physical Properties of Group 14 Elements
This group consists of carbon, silicon, germanium, tin, and lead. The outer electronic configuration of the elements of this group is ns2 np2 whereas n is variable and it varies from 2 to 6. The elements of this group exhibit the covalent oxidation state of +4.
Carbon is the first element of this group and is different from the other members due to its high electronegativity, absence of d orbitals and small size. The group is starting from the element that is non-metal and the last elements are non-metals. The metallic character increases in descending the group.
The first element is non-metal, silicon is the metalloid and germanium is the non-metal but it possesses some of the metallic characteristics, whereas tin and lead are the metals.