Domanda del libro di testo
Pure iron crystallizes in a body-centered cubic structure, shown in the figure. but small amounts of impurities can stabilize a facecentered cubic structure. Which form of iron has a higher density?
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Ch.12 - Solids and Modern Materials
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 12, Problema 110e
What type of lattice—primitive cubic, body-centered cubic, or face-centered cubic—does each of the following structure types possess: (e) ZnS?
Guida verificata passo dopo passo1
Identify the structure type of ZnS, which is known as the zinc blende or sphalerite structure.
Recall that the zinc blende structure is a type of face-centered cubic (FCC) lattice.
Understand that in the zinc blende structure, Zn atoms occupy half of the tetrahedral holes in a face-centered cubic lattice of S atoms.
Recognize that the face-centered cubic lattice is characterized by atoms at each of the corners and the centers of all the faces of the cube.
Conclude that ZnS, with its zinc blende structure, possesses a face-centered cubic lattice.
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Crystal Lattice Structures
Crystal lattice structures describe the ordered arrangement of atoms in a crystalline solid. The three primary types are primitive cubic, body-centered cubic (BCC), and face-centered cubic (FCC). Each type has a distinct arrangement of atoms that affects the material's properties, such as density and stability.
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Percorso guidato
00:53
Lattice Energy
Zinc Blende Structure
Zinc sulfide (ZnS) commonly adopts the zinc blende structure, which is a face-centered cubic lattice. In this structure, zinc and sulfur atoms alternate in a tetrahedral coordination, leading to a specific arrangement that influences the compound's electronic and optical properties.
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01:42Resonance Structures
Coordination Number
The coordination number refers to the number of nearest neighbor atoms surrounding a central atom in a crystal lattice. In the case of ZnS, the coordination number is four, indicating that each zinc atom is surrounded by four sulfur atoms and vice versa, which is characteristic of the tetrahedral arrangement in the zinc blende structure.
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00:27Coordination Numbers
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Introduction of carbon into a metallic lattice generally results
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Silicon carbide, SiC, has the three-dimensional structure shown in the figure.
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