what are the anomalous properties of first element in each group ??
The anomalous properties of the first element in its group are as under:-
1) Small size.
2) High ionization energy.
3) High electronegativity.
4) Vacant d orbitals.
The anomalous behaviour of first element of s and p block elements of each group as compared to other group members is due to following reasons:
The first member of each group of representative elements (i.e., s and p - block elements) shows anomalous behaviour. Illustrate with two examples.