(a) Interpretation: The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined. Concept introduction: A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C ≡ C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

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Answer 1

Question

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

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Problem Draw a Lewis structure and identify the octet-rule exception for (a) H3PO4 (draw two resonance forms and select the more important); (b) BFCl2.Plan We draw each Lewis structure and examine it for exceptions to the octet rule.(a) The central atom is in Period 3, so it can have more than an octet.(b) The central atom is B, which can have fewer than an octet of electrons.

Problem Name each of the following anions and give the name and formula of the acid derived from it: (a) Br-; (b) IO3 -; (c) CN-; (d) SO4 2-; (e) NO2 -.

The structure at the right is a skeleton of an anion having the overall formula C6H,NO¯. The hydrogen atoms are not shown. (a) Draw a complete Lewis structure in which the -1 formal charge is on N. Include all H atoms and C. valence electrons. (b) Do the same for a Lewis structure with the -1 formal charge on O. (c) Do the same for a Lewis structure with the -1 formal charge on the C atom that is bonded to three other C atoms.

Answer 2

Question

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

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Answer 3

Question

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

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Answer 4

Question

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

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Answer 5

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 6

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 7

Chapter 2, Problem 2.1YT

Interpretation Introduction

(a)

Interpretation:

The number of electron groups that surround the triple bonded C in Figure 2-1a is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The number of electron groups that surround the central C in Figure 2-1b is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The number of electron groups that surround each C in Figure 2-1c is to be determined.

Concept introduction:

A group of electrons around an atom is a lone pair or a bond with another atom. The bond, whether a C-C bond, a C=C bond, or a C≡C bond, counts as just one electron group. So electron groups around an atom can also be counted as the number of atoms bonded to it plus any lone pairs on it.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 2 - Prob. 2.1P Ch. 2 - Prob. 2.2P Ch. 2 - Prob. 2.3P Ch. 2 - Prob. 2.4P Ch. 2 - Prob. 2.5P Ch. 2 - Prob. 2.6P Ch. 2 - Prob. 2.7P Ch. 2 - Prob. 2.8P Ch. 2 - Prob. 2.9P Ch. 2 - Prob. 2.10P

Solution Summary: The Lewis structure of the molecule in Figure 2-1a is The triple bonded C has no lone pairs.

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