The first member of each group of representative elements (i.e., s and p-block elements) shows anomalous behaviour. Illustrate with two examples.
The first member of each group of representative elements (i.e., s and p-block elements) shows anomalous behaviour. Illustrate with two examples.

Examples include lithium and beryllium. The initial group element is Li. It has variety of characteristics and forms, including covalent compounds and nitrides. The second group’s initial element is beryllium. It features a number of oddities, such as the fact that it forms a covalent molecule with a coordination number of four when other elements have a coordination number of six.