Chapter 5, Problem 85QRT

(a)

Interpretation Introduction

Interpretation:

The smaller atom between caesium and rubidium has to be identified.

Concept Introduction:

Atomic radius:  It is defined as distance between nucleus of atom and electron present in outermost valence shell of the atom.

(b)

Interpretation Introduction

Interpretation:

The smaller atom or ion between ${\text{O}}^{\text{2-}}\text{and}\text{O}$ has to be identified.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The smaller atom between bromine astatine has to be identified.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The smaller atom or ion between ${\text{Ba}}^{\text{2+}}\text{and}\text{Ba}$ has to be identified.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The smaller atom or ion between ${\text{Cl}}^{\text{-}}\text{and}{\text{Ca}}^{\text{2+}}$ has to be identified.

Concept Introduction:

Refer to part (a).