   # Select the atom or ion in each pair that has the larger radius. (a) Cl or Cl − (b) Al or O (c) In or I ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 7, Problem 25PS
Textbook Problem
365 views

## Select the atom or ion in each pair that has the larger radius. (a) Cl or Cl− (b) Al or O (c) In or I

(a)

Interpretation Introduction

Interpretation:

The larger atomic radius has to be selected given the different periodic elements and its ions.

Concept Introduction:

Atomic radius: The concept explain chemical element is a measured of the size of its atoms, in other words to measure the distance from the center of the nucleus to the boundary of the surrounding cloud of number of electrons.

### Explanation of Solution

According to periodic table was clearly explained the all (s,p, d, f) block elements atomic size will increase when left side to right side. Than all atomic size will be increase when above to below.

The chlorine (Cl,99 pm) atomic radius less than chlorine (Cl, 188 pm) ions this correct reason due to the addition of shells (or) addition one electrons in outermost (3p) orbital and chlorine (Cl) atomic number (Z=17), Clatomic number (Z=18), here Clions has a larger atomic radius than chlorine (Cl) atom. So this attraction between the nucleus and the electrons decreases as you move to the left of a period and down a group.

AtomicnumberofChlorine(Cl)=17spdfwith orbtital notation=[1s22s22p63s23p5]Orbital filling method       1s22s22p63s23p5spdfwith noble gas notation=[Ne]3s23p5Orbitalboxnotation       = [Ne]3s23p5

When (Cl) was gain to (Cl-) ions, it gain for one electron in outermost (3s) orbitals, hence this orbital notation method shows below

(b)

Interpretation Introduction

Interpretation:

The larger atomic radius has to be identified given the different periodic elements and its ions.

Concept Introduction:

Atomic radius: The concept explain chemical element is a measured of the size of its atoms, in other words to measure the distance from the center of the nucleus to the boundary of the surrounding cloud of number of electrons.

(c)

Interpretation Introduction

Interpretation:

The larger atomic radius has to be identified given the different periodic elements and its ions.

Concept Introduction:

Atomic radius: The concept explain chemical element is a measured of the size of its atoms, in other words to measure the distance from the center of the nucleus to the boundary of the surrounding cloud of number of electrons.

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