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(a)
Interpretation:
The correct band picture for diamond, silicon, silicon doped with
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.
(b)
Interpretation:
The correct order of electrical conductivity for diamond, silicon, silicon doped with
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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Chapter 12 Solutions
CHEMISTRY-W/MASTERING CHEMISTRY ACCESS
- 8.96 A business manager wants to provide a wider range of p- and n-type semiconductors as a strategy to enhance sales. You are the lead materials engineer assigned to communicate with this manager. How would you explain why there are more ways to build a p-type semiconductor from silicon than there are ways to build an n-type semiconductor from silicon?arrow_forwardal8 is a relatively malleable metal. when al8 forms an alloy with cu8, however, it becomes less malleable. which of the following explanations accounts for this observation?arrow_forwardWhich groups of elements have the best and which the poorest electrical conductivities? Explain.arrow_forward
- Rank the following in order of increasing electrical con-ductivity, and explain your ranking: Po, S, Se.arrow_forwardWhat is the underlying mechanism that causes superconductivity in certain materials? How can we mitigate the environmental impact of the chemical industry? What is the relationship between molecular structure and the optical properties of materialsarrow_forward
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