Which has highest atomic radius

Which of the following has highest atomic radius ?

The figure of an incomplete periodic table is given below. Which element has the highest atomic radius ? Which one has the least ?

Which of the following has the highest atomic radius?

Element having highest atomic radius among the following is :

Which has a larger atomic radius : Al or Ga?

Among the elements b, Al, C and Si (a)Which has the highest first ionization enthalpy? (b)Which has the most negative electron gain enthalpy? (c) Which has the largest atomic radius? (d) Which has the most metallic character?

Among the elements B , Al , C and Si . a. Which has the highest first ionization enthalpy? b. Which has most negative electron gain enthalpy? c. Which has the largest atomic radius? d. Which has the most metallic character?

Among B, Al , C and Si which has the largest atomic radius.

Out of the two elements X and Y which has a bigger atomic radius? (i) X has atomic number = 18 and atomic mass = 40. (ii) Y has atomic number = 20 and atomic mass = 40.

Noble gas atoms have highest atomic radius than other elements present in that period .Why ?