Heat of Vaporization. 314.2 kJ/mol. 363 kJ/mol. Material Properties. Titanium and Vanadium – Comparison – Properties. This article contains comparison of key thermal and atomic properties of scandium and yttrium, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements.

A relatively soft element, scandium resembles yttrium and the rare-earth metals more than it resembles aluminum or titanium. It is a very light metal and has a much higher melting point than aluminum, making it of interest to designers of spacecraft. Scandium is not attacked by a 1:1 mixture of HNO 3 and 48% HF.

Japan is the world's leading importing country of scandium and yttrium. In 2022, Japan imported nearly 8,100 metric tons of the rare earth-metals, with a value of approximately 581.8 million U.S ...

Here we extend its coordination chemistry to the rare-earth cations Sc3+ and Y3 characterize fundamental metal–chelator binding interactions in solution via UV-Vis spec …

Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia. Scandium is present in most of …

A simple and efficient embedding scheme for the wave-function based calculation of the energies of local excitations in large systems and can model the equatorial Cl- ligands in NpO2Cl42- quite accurately, compared to a fully wavefunction-based calculation, and opens up the possibility of modeling the interaction of different ligands to …

Expand. 14. Chemical speciation modelling and thermodynamic database compilation—II. Database compilation and sensitivity analyses. J. Duffield F. Marsicano M. Waters David R. Williams. Chemistry. 1991. 11. Semantic Scholar extracted view of "Scandium, yttrium, lanthanum, and lanthanide nitrates" by S. Siekierski et al.

In order to evaluate possible innate toxic effects of small doses of scandium, hexavalent chromium, gallium, yttrium, indium, rhodium and palladium in terms of growth and survival, 958 mice divided as to were raised in an environment limited in metallic contamination and given 5 ppm metal in drinking water from weaning until natural death.

Introduction: The use of the erbium, chromium-doped yttrium, scandium, gallium, and garnet (Er,Cr:YSGG) laser in vital pulp therapy contributes to the formation of dentin bridges and a sterile zone as well as the maintenance of the vitality of the pulp. However, no prior studies have used the Er,Cr:YSGG laser in partial pulpotomy of immature permanent teeth.

Yttrium features a similar valence electron configuration ([Ar]3d 1 4s 2 for Sc and [Kr]4d 1 5s 2 for Y) and hence, is regarded as a promising candidate to replace scandium. This is supported by theoretical calculations using density functional theory (DFT), which predict a stable wurtzite crystal structure up to 75% of yttrium when …

Feb 2024. Subnational Monthly Trade. View. LinePlot. StackedArea. Flow. Exports. Imports. Y-AXIS SCALE. Linear. Log. Value. For a full breakdown of trade patterns, visit the trend …

Chemical and Physical Properties of Scandium and Yttrium. Chaim T. Horovitz. Chapter. 378 Accesses. 3 Citations. Part of the book series: Biochemistry of the Elements ( …

Yttrium. At BAZ refinery the bauxite residue from processing SUBR bauxite contains 2.8 ÷ 3.3 more yttrium as compared with Sc 2 O 3, i.e. the amount of yttrium is 330 ÷ 450 ppm (in terms of metal). Yttrium adjoins scandium in Group 3 of the Periodic table; therefore, they possess similar chemical properties and form similar phases.

Theoretical spectroscopic constants are reported for the X 1 Σ + and a 3 Δ states of the fluorides, chlorides, and bromides of scandium and yttrium. The calculated D 0 values (eV) are ScF(6.00), ScC1(4.55), ScBr(3.90), YF(6.72), YC1(5.36), and YBr(4.74). All systems are predicted to have 1 Σ + ground states once the effect of unlinked higher …

The activity coefficients, apparent potentials and diffusion coefficients of lanthanum, yttrium, scandium and terbium in LiCl-KCl molten salt were calculated up to a high concentration of around 3 at% based on our previous simulation model [6] and their concentration dependence was investigated. Apparent potential was derived from the …

This study aims to evaluate the effects of 940 nm diode laser and 2780 nm erbium, chromium-doped: yttrium, scandium, gallium, garnet (Er,Cr:YSGG) laser used in addition to mechanical therapy in the non-surgical treatment of peri-implantitis on clinical parameters and matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 …

There is a dearth of data on rare earth elements (REE), yttrium and scandium in foods which extends also to baseline datasets for edible wild mushrooms, though this has started to change in the last decade. Concentrations and shale normalized patterns of REE and Y (REY) were studied by using inductively coupled …

Research Organization: California Univ., Livermore Sponsoring Organization: USDOE NSA Number: NSA-15-012949 OSTI ID: 4061656 Report Number(s): NAS-NS-3020

Objectives: Lasers are effective tools for soft tissue surgery. The erbium, chromium: yttrium, scandium, gallium, garnet laser is a new system that incorporates an air-water spray. This study evaluates the cutting margins of this laser and compares healing with laser and conventional scalpel and punch biopsy-induced wounds.

DOI: 10.1021/IC00223A011 Corpus ID: 93089287; Synthesis and structure of double-metal-layered scandium, yttrium, and zirconium chloride carbides and nitrides, M2Cl2C and M2Cl2N

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Ranking Rare-earth metals, scandium and yttrium ranks 2824th in the Product Complexity Index (PCI). Description Rare-earth metals are used in the magnets that power …

This chapter reviews the literature reported during 2012 on scandium, yttrium and the lanthanide elements. Jump to main content . Jump to site search . Publishing. Journals; Books; Databases; Search. Advanced. Search. You must enter a search term. Advanced search Volume 109, 2013 ...

Yttrium has very similar properties to the later lanthanides, but scandium is significantly smaller. Although the first 3d metal, scandium is not a transition metal, but …

Scandium and yttrium are considered REE since they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties. All REE occur in nature but not in pure metal form, ... (LAMP) in Kuantan, Malaysia which led to international activism and claims of environmental and social injustice (Ali, 2014).

Scandium is very widely but thinly distributed, and its only rich mineral is the rare thortveitite. Yttrium and lanthanum are both obtained from lanthanide minerals and …

The fastest growing import markets in Rare-earth metals, scandium and yttrium for Thailand between 2021 and 2022 were Malaysia ($4.36M), Italy ($401), and South Korea ($149). COMPANIES In 2023, leading companies such as SAMSUNG ELECTRONICS AMERICA (1.13M), LG ELECTRONICS U.S.A. INC. (503k), and IKEA SUPPLY AG …

Rare Earths. The rare earths, or rare earth elements (REE), are a relatively abundant group of elements consisting of scandium, yttrium, and the 15 elements of the lanthanide series of the periodic table. Scandium (Sc) is the lightest rare earth element. Scandium is present in crustal rocks in amounts greater than lead and precious metals, but ...