A hypothetical ionic solid contains ions of radius and ions of radius

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Bonding and Molecular Structure · Chemical Bonding and Molecular Structure

Problem

A hypothetical ionic solid contains

\text{X}^+

ions of radius

90\,\text{pm}

and

\text{Y}^-

ions of radius

200\,\text{pm}

. Based on this size ratio, which nearest-neighbor arrangement around an

\text{X}^+

ion is most likely to be favored? (a) Cubic coordination by 8

\text{Y}^-

ions (b) Octahedral coordination by 6

\text{Y}^-

ions (c) Linear coordination by 2

\text{Y}^-

ions (d) Tetrahedral coordination by 4

\text{Y}^-

ions