Lanthanide Metals
Lanthanide Metals - Related Videos
02:58
Properties of Transition Metals
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2020
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals. Figure 1: Periodic Table. The transition metals are located in groups 3–11 of the periodic table. The inner transition metals are in the two rows...
13:21
Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
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Cited by 9 •
2011
We demonstrate the metalation, purification, and characterization of lanthanide complexes. The complexes described here can be conjugated to macromolecules to enable tracking of these molecules using magnetic resonance imaging.
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,...
03:06
Alkali Metals
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2020
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1). Table 1: Properties of the alkali metals Element Electron Configuration Atomic Radius (pm) IE1 (kJ/mol) Melting Point (°C) Density at 25 °C (g/cm3)
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
Progressive filling of the 4f subshell changes the electronic structures across the series rather than producing identical behavior. Those electronic changes help account for the distinctive chemical and physical properties associated with lanthanide metals, including their characteristic magnetic and optical behavior. This makes electronic structure central to interpreting trends in lanthanide chemistry.
Lanthanide contraction is the gradual decrease in atomic and ionic radii as nuclear charge increases across the series. It provides a useful framework for understanding why members with closely related chemistry can still show systematic differences in size. In research, this trend helps organize comparisons of structures, ions, and chemical behavior from lanthanum through lutetium.
Most lanthanides form +3 ions, making that charge a central reference point for their chemistry. These ions participate in coordination chemistry, where their interactions with surrounding species help researchers examine lanthanide-containing compounds and materials. Focusing on the common charge therefore connects ionic form with the study of structure and chemical behavior.
Magnetic and optical behavior gives lanthanide compounds significance beyond their basic reactivity. These properties arise in the context of the series’ electronic structures and provide distinct ways to investigate or exploit the elements. Their characteristic responses help explain why lanthanide chemistry appears in lasers, phosphors, permanent magnets, and other advanced-material applications.
Lanthanide metals support different application areas because their chemical, magnetic, and optical properties can be used for different purposes. Examples include catalysts, phosphors, lasers, permanent magnets, contrast agents, and advanced materials. This range connects lanthanide chemistry with industrial research as well as materials-focused scientific work.
When selecting a lanthanide for a research or technology context, scientists can consider whether the intended application is catalytic, phosphorescent, laser-related, magnetic, contrast-based, or materials-oriented. The series is therefore not limited to one role: its varied chemical and physical properties support distinct uses across analytical, materials, and industrial research.