Scandium melting point

Scandium is a soft, lightweight, silvery-white metal that does not tarnish in air, but over time, it turns yellowish-pink. It resists corrosion. Scandium reacts vigorously with acids, but not water. Scandium has some properties similar to the rare-earth elements. Although its position in group 3 places it at the head of the 17 elements of the lanthanide series of rare-earth metals, scandium, as a metal, is not usually considered a rare-earth. Scandiums melting point is l,54l°C, its boiling point is 2836°C, and its density is 2.989 glctn . 

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 HNOs and 48% HF. 

Scandium was not produced in any quantities until the late 1930s. Its light weight, resistance to corrosion, and high melting point made it especially useful in the aerospace industries. In the early 1940s contractors for the U.S. Air Force appropriated almost all of the scandium metal for use in the construction of military aircraft. The pure metal form is produced by the electrolysis of a salt of scandium, ScCl The metal has found some other uses in... 

To a suspension of scandium [(R)-1,1 -binaphthyl-2,2 -diyl phosphate]3 3H20 (10.9 mg, 0.01 mmol) in dry toluene (1 ml) was successively added 1 (20.8 mg, 0.1 mmol) and 2 (31.9 mg, 0.16 mmol) under an argon atmosphere, and the mixture was stirred for 24 h at room temperature (Scheme A.2). The reaction mixture was passed through a short column of silica gel. The eluent was evaporated and the residue was purified by column chromatography on silica gel (hexane-AcOEt 4 1) to give (3 S)-l,3-diphenyl-3-diphenylmethoxyaminopropan-l-one3 (40.4mg, 99%) as colorless needles. Melting point 79.5-79.8°C. 

Scandium metal is a silvery-white solid with a slight pink or yellow tint when exposed to air. It has a melting point of 2,800°F (1,538°C) and a... 

There are relatively few commercial uses for scandium or its compounds. It is sometimes used to make alloys for special purposes. Scandium metal is lighter than most other metals. It is also resistant to corrosion (rusting) and has a high melting point. These properties make scandium alloys especially desirable for use in sporting equipment, such as baseball bats, lacrosse sticks, and bicycle frames. 

Let s begin by surveying some of the key physical and chemical properties of the transition-metal elements and interpreting trends in those properties using the quantum theory of atomic structure developed in Chapter 5. We focus initially on the fourth-period elements, also called the first transition series (those from scandium through zinc in which the 3d shell is progressively filled). Then we discuss the periodic trends in the melting points and atomic radii of the second and third transition series elements. 

A compound ACI3 (A is an elemeni) has a melting point of —112 °C. Would you expect the compound to be molecular or ionic If you were told that A is either scandium or phosphorus, which do you think is the more likely choice ... 

Only one enthalpy value was determined in the liquid phase, by Dennison et al. (1966a) at the melting point. After correction for tantalum contamination due to partial dissolution of the hquid scandium in the tantalum container following the method of Dennison et al. (1966b), the derived enthalpy of fusion is 14,096 J/mol which is considered to be intrinsic and independent of any... 

A complicating factor in an investigation of the Eu-Sc alloy system is the fact that the melting point of scandium (1541 C, see table 1) is 14°C higher than the boiling point of europium (1527°C see table 4). 

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