The atomic radii of transition elements in a period are.

Options

A. smaller than those of s-block as well as p-block elements.
B. larger than those of s-block as well as p-block elements
C. smaller than those of s-block but larger than those of p-block element
D. larger than those of s-block but smaller than those of p-block elements

Explanation

Across the period the atomic radii generally decrease with increasing atomic number as effective nuclear charge increase .
Therefore, (c ) option is correct.