The element E in EF 4 − that belongs to second period has to be determined. Concept Introduction: Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero. The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms. The formula to calculate formal charge on an atom is as follows: Formal charge = [ ( number of valence electrons in an atom ) − ( number of lone pairs ) − 1 2 ( number of shared electrons ) ]

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Answer 1

Question

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

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Two substances with empirical formula HNO are hyponi-trous acid ( μ=62.04 g /mol) and nitroxyl (μ=31.02 g/mol).(a) What is the molecular formula of each species?(b) For each species, draw the Lewis structure having the lowestformal charges. (Hint:Hyponitrous acid has an N=N bond.)(c) Predict the shape around the N atoms of each species.(d) When hyponitrous acid loses two protons, it forms the hy-ponitrite ion. Draw cisand transforms of this ion.

Answer the following questions that relate to the chemistry of nitrogen. (a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation. 2 N(g) ® N2(g) Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction. Average Bond Energy (k) mol-1) Bond N-N 160 N=N 420 N°N 950 (b) The reaction between nitrogen and hydrogen to form ammonia is represented below. N2(g) + 3 H2(g)® 2 NH3(g) AH° = -92.2 kJ Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer. (C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.

Which of these statements about resonance is true?(a) When you draw resonance structures, it is permissibleto alter the way atoms are connected.(b) The nitrate ion has one long N¬O bond and two shortN¬O bonds.(c) “Resonance” refers to the idea that molecules areresonating rapidly between different bonding patterns.(d) The cyanide ion has only one dominant resonancestructure.(e) All of the above are true.

Answer 2

Question

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

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Answer 3

Question

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

Expert Solution & Answer

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Answer 4

Question

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

Expert Solution & Answer

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Answer 5

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

Answer 6

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

Answer 7

Chapter 9, Problem 9.92QE

(a)

Interpretation Introduction

Interpretation:

The element E in EF4− that belongs to second period has to be determined.

Concept Introduction:

Second period has eight elements namely lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.

Formal charge is a charge of each atom in the structure. A formal charge is the electric charge of an atom in a molecule. The sum of formal charges on neutral species must zero.

The sum of the formal charges on an ion must equal the charge on the ion. Most Lewis structures have values of zero for the formal charges of the atoms.

The formula to calculate formal charge on an atom is as follows:

Formal charge=[(number of valence electrons in an atom)−(number of lone pairs)−12(number of shared electrons)]

Answer 8

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

Answer 9

(b)

Interpretation Introduction

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 9 - Prob. 9.1QE Ch. 9 - Prob. 9.2QE Ch. 9 - Prob. 9.3QE Ch. 9 - What main factors control the magnitude of lattice...Ch. 9 - Prob. 9.5QE Ch. 9 - Prob. 9.6QE Ch. 9 - Prob. 9.7QE Ch. 9 - Prob. 9.8QE Ch. 9 - Prob. 9.9QE Ch. 9 - Prob. 9.10QE

Solution Summary: The author explains the formula to calculate the formal charge on an atom.

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Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)

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Chapter 9 Solutions

Solution Summary: The author explains the formula to calculate the formal charge on an atom.

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Interpretation: The element E in EF4+ that belongs to second period has to be determined. Concept Introduction: Refer to part (a)

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Chapter 9 Solutions

Interpretation:

The element E in EF4+ that belongs to second period has to be determined.

Concept Introduction:

Refer to part (a)