WebMelting point: 1814 K Boiling point: 3103 K Density [kg/m3]: 2985 Molar volume: 15.00 × 10 -6 m 3 /mol Protons/Electrons: 21 Neutrons: 24 Shell structure: 2,8,9,2 Electron configuration: [Ar]3d14s2 Oxidation state: 3 Crystal structure: hexagonal A rare transition element, scandium was discovered in 1878 by L. Nilson in Scandinavia. WebProgress in Nb-Si ultra-high temperature structural materials: A review Abstract Nb-Si based alloys have the greatest potential to replace nickel-based superalloys and become a new generation ultra-high temperature structural material with service temperature of 1200-1400 °C due to their high melting point, high stiffness, low density, and attractive …

Scandium - Wikipedia

Web1 de jan. de 2024 · As a transition metal, scandium’s eutec tic reaction is close to the melti ng point of aluminium and results in the for mation of a supersaturated solid solution … WebLithium oxide is produced by thermal decomposition of lithium peroxide at 300–400 °C. [2] Lithium oxide forms along with small amounts of lithium peroxide when lithium metal is burned in the air at and combines with … flowers for vases album art

Physical properties of the alkali metals - Group 1 - BBC Bitesize

Webhigher melting points. higher densities. greater strength; greater hardness; Remember that these are typical properties – some transition metals may not show one or more of them. WebIts high melting point and broad chemical resistance meant that obtaining a pure sample of the metal was difficult. Platinum's place as a precious metal was first established in the 18 th century by Henrik Sheffer, who succeeded in melting or fusing platinum by adding arsenic. http://periodic.lanl.gov/21.shtml green bathtub cleaner