Question

18.)
Ionic radii are
(1) Greater than the respective atomic radii of
elements in general
(2) Greater than the respective atomic radii of
electropositive elements
(3) Greater than the respective atomic radii of
electronegative elements
(4) Less than the respective atomic radii of
electronegative elements


Give answer with full explanation​

Answer 1

Explanation:

Ionic radius, rion, is the radius of an atom's ionin ionic crystals structure. Although neither atoms nor ions have sharp boundaries, they are sometimes treated as if they were hard spheres with radii such that the sum of ionic radii of the cation and anion gives the distance between the ions in a crystal lattice. Ionic radii are typically given in units of either picometers (pm) or angstroms (Å), with 1 Å = 100 pm. Typical values range from 30 pm (0.3 Å) to over 200 pm (2 Å