Pilgaard Solutions

Yttrium


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Other names/abbreviations: Y



Element no: 39
Element group: 3 (IUPAC)
III B (American labelling)
III A (European labelling)
Element type: Transition metals
CAS-Number: 7440-65-5
EINECS-Number: 231-174-8



Physical properties

Appearance

Physical state @ 20°C: Solid [1]
Color: Silvery-white [1]


Bulk properties

Molecular weight (g/mol): 88.90585(2) [1]
Melting point (°C): 1530 [1]
Boiling point (°C): 3264 [1]
Density (g/cm3): 4.5 [1]
Molar volume (cm3): 19.88 (20 °C) [2]
Elastic properties:
Young's modulus (GPa):
Rigidity modulus (GPa):
Bulk modulus (GPa):
Poissons ratio:
66-68 [2]
26.2-26.7 [2]
49 [2]
0.27 [2]


Thermodynamic properties

ΔfH°gas (kJ/mol): 421.3 [3]
ΔfH°solid (kJ/mol): 0.0 [3]
ΔH°fusion (kJ/mol): 11.5 [1]
11.40 [3]
ΔH°vaporization (kJ/mol): 367 [1]


S°gas (J/K·mol): 179.5 [3]
S°solid (J/K·mol): 44.4 [3]


ΔfG°gas (kJ/mol): 381.1 [3]


Cp (gas) (J/K·mol): 25.9 (25 °C) [3]
Cp (solid) (J/K·mol): 26.53 (25 °C) [3]


Coeff. of linear thermal expansion (106 K-1): 10.6 (25 °C) [3]


Crystal structure

Crystal type: HCP [2]


Electronic properties

Electron configuration: 1s2-2s2-2p6-3s2-3p6-3d10-4s2-4p6-4d1-5s2
Ionic radius (Å): 0.900 [1]


Conductivity

e°(V): Y(III)/Y: -2.37 [1]
Electrical resisitvity (μΩ·cm): 53.00 (20 °C) [2]
59.60 (25 °C) [2]
Thermal (W/m·K): 17.2 (27 °C) [3]



References

1: Greenwood,N.N., Earnshaw,A. Chemistry of the elements
2nd edition (1997) Edited by Greenwood,N.N., Earnshaw,A. pp. 1-1340, Butterworth-Heinemann. Oxford. Great Britain

2: Buch,A. Pure Metals Properties. A Scientific-Technical Handbook
1st edition (1999) Edited by Buch,A. pp. 1-306, ASM International and Freund Publishing House Ltd. Ohio. USA

3: CRC Handbook of Chemistry and Physics
75th edition (1994) Edited by Lide,D.R. , CRC Press Inc. Boca Raton, USA







© Michael Pilgaard
Created: October 7, 2008