Metallic Solids
Metallic Solids - Related Videos
02:37
Metallic Solids
0 Views •
2020
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties. All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
09:42
Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
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2016
The fabrication protocol of a dipole-assisted solid phase extraction microchip for the trace metal analysis is presented.
09:18
Metal-Assisted Electrochemical Nanoimprinting of Porous and Solid Silicon Wafers
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Cited by 2 •
2022
A protocol for metal-assisted chemical imprinting of 3D microscale features with sub-20 nm shape accuracy into solid and porous silicon wafers is presented.
11:05
Quadruply Metal-Metal Bonded Paddlewheels
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2023
Source: Corey Burns, Tamara M. Powers, Department of Chemistry, Texas A&M University Paddlewheel complexes are a class of compounds comprised of two metal ions (1st, 2nd, or 3rd row transition metals) held in proximity by four bridging ligands (most commonly formamidinates or carboxylates) (Figure 1). Varying the identity of the metal ion and the bridging ligand provides access to large families of paddlewheel complexes. The structure of paddlewheel complexes allows for metal-metal bonding,...
02:32
Bonding in Metals
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2020
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. Electron Sea Model Most metal atoms do not possess enough valence electrons to enter into an ionic or covalent bonding. However, the valence electrons in metal atoms are loosely held due to their low electronegativity or attraction with the nucleus. The ionization energy of metal atoms (energy required to remove an electron from...
FAQs
Delocalized valence electrons can move through the ordered lattice instead of remaining attached to individual metal atoms. Their mobility permits electrical charge to flow and helps transfer thermal energy across the solid. The same electron arrangement also contributes to light reflection, explaining why the electronic structure of metallic solids produces several characteristic physical properties at once.
Positive metal ions can shift relative to one another while the shared, delocalized electrons continue to hold the lattice together. Because this movement does not completely disrupt metallic bonding, the solid can undergo shaping by hammering or drawing rather than immediately separating. This mechanism links metallic bonding to the flexibility and formability important in practical metal use.
Composition and crystal structure influence several measurable properties, including hardness, melting point, and corrosion resistance. Changes in these features alter how the lattice and its bonding respond to external conditions. Consequently, metallic solids with different compositions or structures can show different performance, even though they share the general bonding model associated with metallic materials.
Alloys are important because metallic materials can be considered through their composition and crystal structure, both of which affect hardness, melting point, and corrosion resistance. Adjusting these characteristics allows the resulting material to suit different demands. In chemistry and materials design, alloy development therefore connects microscopic lattice organization with the selection of useful macroscopic properties.
Selection depends on the function required. Construction materials may require suitable strength, flexibility, hardness, and corrosion resistance, while electronic applications depend especially on electrical conductivity and related heat-transfer behavior. Melting point can also matter when materials encounter elevated temperatures. Comparing these properties helps connect the intended application with the composition and crystal structure of the solid.
Their combination of conductivity, strength, flexibility, and resistance-related properties supports uses in construction materials and electronics. Metallic solids also contribute to catalysis and energy technologies, where their composition and crystal structure can determine performance. These applications make them important in chemistry because the same bonding framework connects lattice-level behavior with technological functions across several research areas.