EP INTRO.TO GENERAL,ORGANIC...-OWL ACCE
EP INTRO.TO GENERAL,ORGANIC...-OWL ACCE
12th Edition
ISBN: 9781337915984
Author: Bettelheim
Publisher: Cengage Learning
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Chapter 3, Problem 5P

3-21 Write the formula for the most stable ion formed by each element.

(a) Mg

(b) F

(c) Al

(d)S

(e)K

(f) Br

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by Mg should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by Mg is Mg2+.

Explanation of Solution

The atomic number or number of electrons of Mg is 12, The Electronic configuration of Mg is as follows:

Mg12:1s2  2s22p6   3s2

When Mg will lose 2 electrons; the electronic configuration of its ion become as the nearest noble element neon as follows:

Mg2+10:1s2  2s22p6   [Ne] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by Mg is Mg2+.

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by F should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by F is F.

Explanation of Solution

The atomic number or number of electrons of F is 9, the electronic configuration of F is as follows:

F9:1s2  2s22p5  

When F will gain 1 electron; the electronic configuration of its ion become as the nearest noble element neon as follows:

F10:1s2  2s22p6   [Ne] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by F is F.

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by al should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by al is al3+.

Explanation of Solution

The atomic number or number of electrons of al is 13, the electronic configuration of al is as follows:

Mg12:1s2  2s22p6   3s2

When al will lose 3 electrons; the electronic configuration of its ion become as the nearest noble element neon as follows:

al3+10:1s2  2s22p6   [Ne] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by al is al3+.

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by S should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by S is S2.

Explanation of Solution

The atomic number or number of electrons of S is 16, the electronic configuration of S is as follows:

S16:1s2  2s22p6   3s23p4

When S will gain 2 electrons; the electronic configuration of its ion become as the nearest noble element Argon as follows:

S216:1s2  2s22p6   3s23p6   [ar] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by S is S2.

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by K should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by K is K+.

Explanation of Solution

The atomic number or number of electrons of K is 19, the electronic configuration of K is as follows:

K16:1s2  2s22p6   3s23p6   4s1

When K will lose 1 electron; the electronic configuration of its ion become as the nearest noble element argon as follows:

K+19:1s2  2s22p6   3s23p6   [ar] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by K is K+.

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

The formula for the most stable ion formed by Br should be determined.

Concept Introduction:

Octet rule: generally all atoms will lose, gain or share electrons to attain 8 valence electrons; the electronic configuration of the nearest noble element.

Duet rule: generally some atoms like hydrogen, lithium, beryllium will lose, gain or share electrons to attain 2 valence electrons; the electronic configuration of the nearest noble element like helium.

Answer to Problem 5P

The formula for the most stable ion formed by Br is Br.

Explanation of Solution

The atomic number or number of electrons of Br is 35, the electronic configuration of Br is as follows:

Br35:1s2  2s22p6   3s23p53d10  

When Br will gain 1 electron; the electronic configuration of its ion become as the nearest noble element argon as follows:

Br36:1s2  2s22p6   3s23p53d10 [Kr] 

The electronic configuration of the nearest noble element like helium, neon argon is the stable configuration hence the formula for the most stable ion formed by Br is Br.

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Chapter 3 Solutions

EP INTRO.TO GENERAL,ORGANIC...-OWL ACCE

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