(a) Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted. Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

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Answer 1

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Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

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(f) SO: Best Lewis Structure 3 e group geometry:_ shape/molecular geometry:, (g) CF2CF2 Best Lewis Structure polarity: e group arrangement:_ shape/molecular geometry: (h) (NH4)2SO4 Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):

1. Problem Set 3b Chem 141 For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the molecule is polar or non-polar (iv) (a) SeF4 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: (b) AsOBr3 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles):

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Answer 2

Question

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

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Answer 3

Question

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

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Answer 4

Question

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

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Answer 5

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

Answer 6

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Answer 7

Chapter 17, Problem 17.37P

Interpretation Introduction

(a)

Interpretation: The hybridization of each nitrogen atom in methotrexate is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Answer 8

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Answer 9

Interpretation Introduction

(b)

Interpretation: The type of orbital in which the lone pair of nitrogen atom resides is to be predicted.

Concept introduction: Hybridization is the combination of two or more atomic orbitals to form the same number of hybrid orbitals, each having the same shape and energy. Number of groups around the atom is equal to number of the number of orbitals hybridized to give hybrid atomic orbitals.

Answer 10

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

Answer 11

Interpretation Introduction

(c)

Interpretation: The reason corresponding to the fact that the bicyclic ring in methotrexate is aromatic is to be explained.

Concept introduction: A molecule must be cyclic, planar, completely conjugated and should follow Huckel’s rule to be classified as aromatic. According to the Huckel’s rule the number of π electrons in the molecule must be equal to (4n+2).

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 17 - Prob. 17.1P Ch. 17 - Problem 17.2 What orbitals are used to form the...Ch. 17 - Problem-17.3. Give the IUPAC name for each...Ch. 17 - Prob. 17.4P Ch. 17 - Problem-17.5 What is the structure of propofol,...Ch. 17 - Problem 17.6 What is the structure of a compound...Ch. 17 - Problem 17.7 How many NMR signals does each...Ch. 17 - Prob. 17.8P Ch. 17 - Prob. 17.9P Ch. 17 - Prob. 17.10P

Solution Summary: The author explains that the hybridization of nitrogen atoms in methotrexate is to be predicted.

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Chapter 17 Solutions