(a) Interpretation: The picture of bands for each metal Hf , Pt , and Re should be determined. Concept introduction: The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

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Answer 1

Question

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

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1,4-Dimethyl-1,3-cyclohexadiene can undergo 1,2- or 1,4-addition with hydrogen halides. (a) 1,2-Addition i. Draw the carbocation intermediate(s) formed during the 1,2-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,2-addition product formed during the reaction in (i)? (b) 1,4-Addition i. Draw the carbocation intermediate(s) formed during the 1,4-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,4-addition product formed from the reaction in (i)? (c) What is the kinetic product from the reaction of one mole of hydrobromic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (d) What is the thermodynamic product from the reaction of one mole of hydrobro-mic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (e) What major product will result when 1,4-dimethyl-1,3-cyclohexadiene is treated with one mole of hydrobromic acid at - 78 deg * C ? Explain your reasoning.

Answer 2

Question

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

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Answer 3

Question

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

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Answer 4

Question

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

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Answer 5

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 6

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 7

Chapter 12, Problem 12.8A

Interpretation Introduction

(a)

Interpretation:

The picture of bands for each metal Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The hardest metal should be determined and also, metal with highest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The softest metal and also, metal with lowest melting point among Hf, Pt, and Re should be determined.

Concept introduction:

The band theory is used to explain hardness, electrical conductivity, melting point for different metals. It can be explained as a theory related to set of MOs that have very less energy difference between them. These sets of MOs are also known as bands. Melting point of any metal depends on occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 12 - Calcium metal crystallizes in a cubic...Ch. 12 - Polonium metal crystallizes in a simple cubic...Ch. 12 - Polonium metal crystallizes in a simple cubic...Ch. 12 - The density of a sample of metal "as measured to...Ch. 12 - Zinc sulfide crystallizes in the following cubic...Ch. 12 - Prob. 12.6A Ch. 12 - Prob. 12.7P Ch. 12 - Prob. 12.8A Ch. 12 - Prob. 12.9P Ch. 12 - Prob. 12.10A

Solution Summary: The author explains that the band theory is used to explain hardness, electrical conductivity, melting point for different metals.

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