Yttrium, Y

Yttrium, is a chemical element that has the symbol Y and atomic number 39. A silvery metallic transition metal, yttrium is common in rare-earth minerals and two of its compounds are used to make the red color phosphors in cathode ray tube displays, such as those used for televisions.

Yttrium is a silver-metallic, lustrous rare earth metal that is relatively stable in air, strongly resembles scandium in appearance, and chemically resembles the lanthanides, and can appear to gain a slight pink lustre on exposure to light. Shavings or turnings of the metal can ignite in air when they exceed 400 °C. When yttrium is finely divided, it is very unstable in air. The metal has a low neutron cross-section for nuclear capture. The common oxidation state of yttrium is +3.

Technical Data
Symbol Y Density (20°C)/gcm3 4.5
Atomic number 39 Melting point /°C 1530
No. of naturally occurring isotopes 1 Boiling point /°C 3264
Atomic weight 88.9059 ΔHfus/kJmol-1 11.5
Electronic configuration [Kr]4d15s2 ΔHvap/kJmol-1 367
Metal radius(12-coordinate)/pm 180 ΔHf(monoatomic gas)/kJmol-1 425(+/-8)
Ionic radius(6-coordinate)/pm 90 Electrical resistivity  
Ionization energy/kJmol-1 I 616 (20°C)/μohm cm 57-70
Ionization energy/kJmol-1 II 1181 Electronegativity χ 1.2
Ionization energy/kJmol-1 III 1980 E° (M3+(aq)\ + 3e- →M(s))/V -2.372
Evaporation Techniques
Temperature (oC) @Vap. Pressure Techniques Remarks
10-8 Torr 10-6 Torr 10-4 Torr Electron Beam Crucible Coil Boat
830 973 1157 Excellent Al2O3 Tungsten Tungsten & Tantalum High Tantalum Solubility

Evaporation Materials
Y2-5025-M 3-6mm pieces
Y2-5000-M 1-3mm pieces

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
Y2-3003-F 0.004" (0.1mm)
Y2-3007-F 0.008" (0.2mm)
Powder
Y2-10000-P -40 mesh
Rods
Y2-2000-R 0.250" (6.35mm)
Y2-2001-R 0.500" (12.7mm)
Sheet
Y2-4001-S 0.015" (0.38mm)
Y2-4002-S 0.020" (0.5mm)
Y2-4003-S 0.030" (0.76mm)
Y2-4004-S 0.040" (1mm)