The main reason for showing anomalous properties of the first member of a group in s or p-block is

Question

The main reason for showing anomalous properties of the first member of a group in s or p-block is (A) maximum chemical reactivity (B) maximum electronegativity and different configurations (C) small size, large charge/radius ratio (D) tendency to form multiple bonds.

Tardigrade Admin · Accepted Answer

Due to small size, large charge/radius ratio and high electronegativity, the first element shows anomalous behaviour.

Q. The main reason for showing anomalous properties of the first member of a group in s or p-block is

maximum chemical reactivity

maximum electronegativity and different configurations

small size, large charge/radius ratio

tendency to form multiple bonds.

Due to small size, large charge/radius ratio and high electronegativity, the first element shows anomalous behaviour.