Question

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:

• A. Small size of atom
• B. Large charge/radius ratio
• C. High electronegativity and non availability of d-orbitals in their valence shell
• D. All of the these

Answer 1

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: Small size of atom, large charge/radius ratio, high electronegativity and non availability of d-orbitals in their valence shell.