Difference between revisions of "Yttrium"

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'''Yttrium''' is a transition metal with the symbol Y and the atomic number 39. It is chemically similar to the lanthanides, and is often grouped with them, as well as [[scandium]], as a rare earth metal. Yttrium is a powerful reducing agent, but is not a necessary addition to the amateur chemistry lab when cheaper agents, such as magnesium, are readily available.
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{{Infobox element
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<!-- General properties -->
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|name=Yttrium
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|symbol=Y
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|pronounce=
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|pronounce comment=
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|pronounce 2=
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|alt name=
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|alt names=
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|allotropes=
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|appearance=Silvery-white
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<!-- Periodic table -->
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|above=[[Scandium|Sc]]
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|below=[[Lanthanum|La]]
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|left=[[Strontium]]
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|right=[[Zirconium]]
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|number=39
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|atomic mass=88.90584(2)
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|atomic mass 2=
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|atomic mass ref=
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|atomic mass comment=
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|series=
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|series ref=
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|series comment=
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|series color=
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|group=3
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|group ref=
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|group comment=
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|period=5
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|period ref=
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|period comment=
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|block=d
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|block ref=
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|block comment=
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|electron configuration=[Kr] 4d<sup>1</sup> 5s<sup>2</sup>
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|electron configuration ref=
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|electron configuration comment=
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|electrons per shell=2, 8, 18, 9, 2
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|electrons per shell ref=
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|electrons per shell comment=
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<!-- Physical properties -->
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|physical properties comment=
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|color=Silvery-white
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|phase=Solid
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|phase ref=
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|phase comment=
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|melting point K=1799
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|melting point C=1526
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|melting point F=2779
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|melting point ref=
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|melting point comment=
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|boiling point K=3203
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|boiling point C=2930
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|boiling point F=5306
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|sublimation point K=
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|sublimation point C=
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|sublimation point F=
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|sublimation point comment=
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|density gplstp=
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|density gplstp ref=
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|density gplstp comment=
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|density gpcm3nrt=4.472
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|density gpcm3nrt 3=
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|density gpcm3mp=4.24
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|density gpcm3bp=
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|density gpcm3bp ref=
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|molar volume=
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|molar volume unit =
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|molar volume ref=
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|molar volume comment=
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|triple point K=
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|triple point kPa=
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|triple point K 2=
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|triple point kPa 2=
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|critical point K=
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|critical point MPa=
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|critical point comment=
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|heat fusion=11.42
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|heat fusion ref=
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|heat fusion comment=
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|heat fusion 2=
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|heat fusion 2 comment=
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|heat vaporization=363
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|heat vaporization ref=
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|heat vaporization comment=
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|heat capacity=26.53
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|heat capacity ref=
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|heat capacity comment=
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|heat capacity 2=
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|heat capacity 2 ref=
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|vapor pressure 1=1883
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|vapor pressure 10=2075
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|vapor pressure 100=(2320)
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|vapor pressure 1 k=(2627)
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|vapor pressure 10 k=(3036)
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|vapor pressure 100 k=(3607)
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|vapor pressure ref=
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|vapor pressure 1 2=
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|vapor pressure 10 2=
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|vapor pressure 100 2=
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|vapor pressure 1 k 2=
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|vapor pressure 10 k 2=
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|vapor pressure 2 comment=
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<!-- Atomic properties -->
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|atomic properties comment=
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|oxidation states='''3''', 2, 1
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|oxidation states ref=
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|oxidation states comment=(a weakly basic oxide)
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|electronegativity=1.22
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|electronegativity ref=
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|electronegativity comment=
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|ionization energy 1=600
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|ionization energy 1 ref=
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|ionization energy 1 comment=
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|ionization energy 2=1180
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|ionization energy 2 ref=
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|ionization energy 2 comment=
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|ionization energy 3=1980
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|ionization energy 3 ref=
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|ionization energy 3 comment=
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|number of ionization energies=
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|ionization energy ref=
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|ionization energy comment=
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|atomic radius=180
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|atomic radius ref=
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|atomic radius comment=
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|atomic radius calculated=
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|atomic radius calculated ref=
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|atomic radius calculated comment=
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|covalent radius=190±7
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|covalent radius ref=
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|covalent radius comment=
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|Van der Waals radius=
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<!-- Miscellanea -->
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|crystal structure=
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|crystal structure prefix=
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|crystal structure comment=Hexagonal close-packed (hcp)
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|crystal structure 2=
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|crystal structure 2 comment=
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|speed of sound=
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|speed of sound comment=
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|speed of sound rod at 20=3300
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|speed of sound rod at 20 ref=
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|speed of sound rod at r.t.=
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|thermal expansion=10.6
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|thermal expansion ref=
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|thermal expansion comment=(α, poly)
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|thermal expansion at 25=
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|thermal expansion at 25 ref=
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|thermal expansion at 25 comment=
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|thermal conductivity=17.2
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|thermal conductivity ref=
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|thermal conductivity comment=
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|thermal conductivity 2=
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|electrical resistivity=5.96·10<sup>-7</sup>
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|electrical resistivity comment=(α, poly)
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|electrical resistivity at 0=
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|electrical resistivity at 20=
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|band gap=
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|Curie point K=
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|magnetic ordering=Paramagnetic
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|magnetic ordering ref=
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|magnetic ordering comment=
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|tensile strength=
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|tensile strength ref=
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|tensile strength comment=
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|Young's modulus=63.5
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|Young's modulus ref=
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|Young's modulus comment=
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|Shear modulus=25.6
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|Shear modulus ref=
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|Shear modulus comment=
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|Bulk modulus=41.2
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|Bulk modulus ref=
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|Bulk modulus comment=
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|Poisson ratio=0.243
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|Poisson ratio ref=
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|Poisson ratio comment=
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|Mohs hardness=
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|Mohs hardness 2=
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|Vickers hardness=
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|Vickers hardness comment=
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|Brinell hardness=200–589
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|Brinell hardness ref=
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|Brinell hardness comment=
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|CAS number=7440-65-5
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|CAS number ref=
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|CAS number comment=
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<!-- History -->
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|naming=After Ytterby (Sweden) and its mineral ytterbite (gadolinite)
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|predicted by=
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|prediction date ref=
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|prediction date=
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|discovered by=Johan Gadolin
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|discovery date ref=
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|discovery date=1794
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|first isolation by=Carl Gustav Mosander
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|first isolation date ref=
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|first isolation date=1842
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|discovery and first isolation by=
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|named by=
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|named date=
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<!-- Isotopes -->
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|isotopes=
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|isotopes comment=
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|engvar=
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}}
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'''Yttrium''' is a transition metal with the symbol '''Y''' and the atomic number 39. It is chemically similar to the lanthanides, and is often grouped with them, as well as [[scandium]], as a rare earth metal. Yttrium is a powerful reducing agent, but is not a necessary addition to the amateur chemistry lab when cheaper agents, such as magnesium, are readily available.
  
 
==Properties==
 
==Properties==
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<references/>
 
<references/>
 
===Relevant Sciencemadness threads===
 
===Relevant Sciencemadness threads===
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*[http://www.sciencemadness.org/talk/viewthread.php?tid=10633 Yttrium metal]
  
 
[[Category:Elements]]
 
[[Category:Elements]]

Latest revision as of 20:59, 22 October 2017

Yttrium,  39Y
General properties
Name, symbol Yttrium, Y
Appearance Silvery-white
Yttrium in the periodic table
Sc
↑
Y
↓
La
Strontium ← Yttrium → Zirconium
Atomic number 39
Standard atomic weight (Ar) 88.90584(2)
Group, block , d-block
Period period 5
Electron configuration [Kr] 4d1 5s2
per shell
 2, 8, 18, 9, 2
Physical properties
Silvery-white
Phase Solid
Melting point 1799 K ​(1526 °C, ​2779 °F)
Boiling point 3203 K ​(2930 °C, ​5306 °F)
Density near r.t. 4.472 g/cm3
when liquid, at  4.24 g/cm3
Heat of fusion 11.42 kJ/mol
Heat of 363 kJ/mol
Molar heat capacity 26.53 J/(mol·K)
 pressure
Atomic properties
Oxidation states 3, 2, 1 ​(a weakly basic oxide)
Electronegativity Pauling scale: 1.22
energies 1st: 600 kJ/mol
2nd: 1180 kJ/mol
3rd: 1980 kJ/mol
Atomic radius empirical: 180 pm
Covalent radius 190±7 pm
Miscellanea
Crystal structure ​Hexagonal close-packed (hcp)
Speed of sound thin rod 3300 m/s (at 20 °C)
Thermal expansion 10.6 µm/(m·K) (α, poly)
Thermal conductivity 17.2 W/(m·K)
Electrical resistivity 5.96·10-7 Ω·m (α, poly)
Magnetic ordering Paramagnetic
Young's modulus 63.5 GPa
Shear modulus 25.6 GPa
Bulk modulus 41.2 GPa
Poisson ratio 0.243
Brinell hardness 200–589 MPa
CAS Registry Number 7440-65-5
History
Naming After Ytterby (Sweden) and its mineral ytterbite (gadolinite)
Discovery Johan Gadolin (1794)
First isolation Carl Gustav Mosander (1842)
· references

Yttrium is a transition metal with the symbol Y and the atomic number 39. It is chemically similar to the lanthanides, and is often grouped with them, as well as scandium, as a rare earth metal. Yttrium is a powerful reducing agent, but is not a necessary addition to the amateur chemistry lab when cheaper agents, such as magnesium, are readily available.

Properties

Physical

Yttrium is a silvery metal that is not very dense (comparable to titanium). It tends to form crystals which are hexagonally close-packed.

Chemical

Yttrium is a typical rare-earth metal, with similar chemistry to aluminium. It does not corrode in air, yet it has the highest thermodynamic affinity for oxygen of any element. Finely divided yttrium is prone to ignition. In solution, yttrium compounds do not exhibit any color due to the lack of free d or f electrons. Its standard reduction potential is almost exactly the same as that of magnesium. It reacts with acids to form salts, most of which are soluble except for yttrium fluoride and yttrium oxalate. Yttrium sulfate is only slightly soluble. The metal reacts with the halogens to produce trihalides.

Its primary oxidation state is +3. Yttrium(II) compounds exist, but are not accessible to the amateur.

Availability

Yttrium is more common than tin on Earth, but it is very hard to find and expensive (though relatively cheap for a rare-earth element). One source for yttrium, as well as other rare earth metals, is Metallium. It is sold in 5 gram and 50 gram sizes, as well as rods, ampoules, 100 gram ingots, and coins. Yttrium and its compounds occasionally sold on eBay as well.

Projects

Handling

Safety

Toxicity

Toxicity data of yttrium compounds is scarce, but they appear to be of low to moderate danger. Yttrium plays no biological role, but acts similarly to calcium within the body. Some yttrium compounds, notably the halides, will hydrolyze when heated and will give off acidic vapors.

Flammability

Small pieces of yttrium metal or powder are flammable. Class D fire extinguishers should be readily available when working with yttrium near an open flame. Water should never be used to extinguish burning yttrium, as it will aggravate the flame.

Storage

Yttrium should be stored away from any corrosive reagents and flame source.

Disposal

Due to its rarity and price, it's best to try to recycle it.

References

Relevant Sciencemadness threads

Retrieved from "https://www.sciencemadness.org/smwiki/index.php?title=Yttrium&oldid=7801"