21 44.956
Sc
Scandium

Scandium , Sc

Scandium is a chemical element that has the symbol Sc and atomic number 21. A silvery white metal that is always present as compounds, scandium ores occur as rare minerals from Scandinavia and elsewhere, and it is sometimes considered along with yttrium, and the lanthanides and actinides, to be a rare earth element.

 

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S2-5002-M

Sc2O3 3-12mm Pieces (sintered) 99.99% Pure

Scandium Oxide

S2-5004-M

Sc 1-6mm Pieces Sc/TREM 99.99% TREM 99.5%

Scandium

4.1 UN3089 PG II Flammable

S2-5005-M

Sc 3-10mm Pieces Sc/TREM >99.99% Packaged under Argon

Scandium

4.1 UN3089 PG II Flammable

S2-5006-M

Sc 3-6mm Pieces Sc/TREM >99.99% TREM 99.5%

Scandium

4.1 UN3089 PG II Flammable

S2-5007-M

Sc Pieces <10mm TREM 99.5% Sc/TREM 99.99% Packaged under Argon

Scandium

4.1 UN3089, PG IIFLAMMABLE

S2-10002-P

ScCl3 -20 mesh 99.9% Pure

Scandium Chloride

S2-10003-P

ScF3 -200 mesh (precipitated) 99.9% Pure

Scandium Fluoride

S2-10004-P

ScI3 -20 mesh 99.9% Pure

Scandium Iodide

S2-10005-P

ScN -60 mesh 99.9% Pure

Scandium Nitride

S2-10006-P

ScO3 -325 mesh (typ. =5 microns) 99.99% Pure

Scandium Oxide

S2-10007-P

ScO3 -325 mesh (typ. =5 microns) 99.95% Pure

Scandium Oxide

S2-10008-P

Sc2S3 -200 mesh 99.9% Pure

Scandium Sulphide

S2-10009-P

Sc2Te3 -20 mesh 99.9% Pure

Scandium Telluride

S2-2000-R1

Sc Rod 6.35mm dia x 200mm long Sc/TREM 99.99% Pure

Scandium

S2-2001-R1

Sc Rod 3.2mm (+/-0.15) dia x 50mm (+/-1.0) long 99.99% Pure Temper Hard

Scandium

S2-2002-R1

Sc Rod 5mm dia. x 10 to 50mm long 99.95% Pure

Scandium

S2-2003-R1

Sc Rod 3.2mm (+/-0.15) dia. x 100mm (+/-1.0) long 99.99% Pure Temper Hard

Scandium

S2-2006-R1

Sc Rod 25.4mm dia x 50.8mm long Sc/TREM 99.99% Pure

Scandium

S2-2007-R1

Sc 5mm dia. x 5mm length 99.9% Pure

Scandium

S2-2008-R1

Sc Rod 6mm dia. x 175mm long 99.9% Pure

Scandium

S2-2008-R2

Sc Rod 6mm dia. x 200mm long TREM 99.9% Sc/TREM 99.99%

Scandium

S2-2009-R1

Sc Rod 8mm dia. x 175mm long 99.9% Pure

Scandium

SC-SHT-0.5

Sc sheet Thickness 0.50mm (0.020") Purity 99.9%

Scandium

SC-SHT-0.76

Sc sheet Thickness 0.76mm (0.030") Purity 99.9%

Scandium

SC-SHT-1

Sc sheet Thickness 1.0mm (0.040") Purity 99.9%

Scandium

S2-9000-D

Scandium Sc, TREM99.5%, Sc/TREM 99.99%

S2-9000-Dx

Scandium Sc, TREM 99.9%, Sc/TREM 99.99%

S2-9000-Dxx

Scandium Sc, TREM 99.99%, Sc/TREM 99.99%

distillation method

S2-9001-D

Scandium Oxide Sc2O3,

Purity 99.99%

S2-9002-D

Scandium-Aluminium Sc-Al,

Available in various ratios wt% or at%, Purity 99.9%

S2-9003-D

Scandium oxide-Lutetium oxide Sc2O3-Lu2O3,

Purity 99.99%

S2-9001-D1

Sc2O3 TRG 25.4mm dia. x 6.35mmTk 99.99% Pure

Scandium Oxide

S2-9001-D3

Sc2O3 TRG 50.8mm dia. x 3.18mm Tk 99.99% Pure

Scandium oxide

Scandium is a rare, hard, silvery, rough very dark metallic element that develops a slightly yellowish or pinkish cast when exposed to air. It is not resistant to weathering when pure and is destroyed on prolonged contact with most dilute acids. However, like some other reactive metals, this metal is not attacked by a 1:1 mixture of nitric acid (HNO3) and hydrofluoric acid, HF.

The rarity of scandium is not an arbitrary fact. The thermonuclear reactions that produce the elements in this range of atomic numbers tend to produce much greater quantities of elements with an even atomic number. These elements were usually produced by the fusion of lighter elements with helium-4 nuclei, starting with carbon-12 (element six). Thus, the common elements in the range of scandium are atomic numbers 18 (argon), 20 (calcium), 22 (titanium), and 24 (chromium); with elements with odd atomic numbers 19 (potassium), 21 (scandium), and 23 (vanadium) being rarely produced, and thus much less common. The production of the odd-numbered elements in this range result from much less common thermonuclear reactions, as is explained elsewhere.

Symbol Sc
Atomic number 21
No. of naturally occurring isotopes 1
Atomic weight 44.9559
Electronic configuration [Ar]3d14s2
Metal radius(12-coordinate)/pm 162
Ionic radius(6-coordinate)/pm 74.5
E° (M3+(aq)\ + 3e- →M(s))/V -2.077
Electronegativity χ 1.3
Electrical resistivity (20°C)/μohm cm 50-61
Density (20°C)/gcm-3 3
Melting point /°C 1539
Boiling point /°C 2748
ΔHfus/kJmol-1 15.77
ΔHvap/kJmol-1 332.71
ΔHf(monoatomic gas)/kJmol-1 376(+/-20)
Ionization energy/kJmol-1 I 631
Ionization energy/kJmol-1 II 1235
Ionization energy/kJmol-1 III 2389
Temperature (oC) @Vap. Pressure
10-8 Torr 714
10-6 Torr 837
10-4 Torr 1002
Techniques
Electron Beam Excellent
Crucible Al2O3
Coil -
Boat Tungsten
Remarks
Alloys with Tantalum