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2021-04-16T04:04:10Z

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setup>Zinnober9: Corrected unrecognized parameter "categories"

2021-04-14T06:13:09Z

Corrected unrecognized parameter "categories"

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{{Infobox element
|number=72
|symbol=Hf
|name=hafnium
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[lutetium]]
|right=[[tantalum]]
|above=[[zirconium|Zr]]
|below=[[rutherfordium|Rf]]
|group=4
|period=6
|block=d
|category comment=
|image name=Hf-crystal bar.jpg
|appearance=steel gray
|electrons per shell=2, 8, 18, 32, 10, 2
|phase=
|density gpcm3nrt=13.31
|density gpcm3mp=12
|melting point K=2506
|melting point C=2233
|melting point F=4051
|boiling point K=4876
|boiling point C=4603
|boiling point F=8317
|heat fusion=27.2
|heat vaporization=648
|heat capacity=25.73
|vapor pressure 1=2689
|vapor pressure 10=2954
|vapor pressure 100=3277
|vapor pressure 1 k=3679
|vapor pressure 10 k=4194
|vapor pressure 100 k=4876
|vapor pressure comment=
|crystal structure=hexagonal close packed
|electronegativity=1.3
|number of ionization energies=3
|ionization energy 1=658.5
|ionization energy 2=1440
|ionization energy 3=2250
|atomic radius=159
|covalent radius=175±10
|magnetic ordering=[[paramagnetic]]
|magnetic ordering ref=<ref name=magnet>{{cite book |url=https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf|chapter=Magnetic susceptibility of the elements and inorganic compounds| editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 }}
</ref>
|electrical resistivity unit prefix=n
|electrical resistivity at 20=331
|thermal conductivity=23.0
|thermal expansion at 25=5.9
|speed of sound rod at 20=3010
|magnetic susceptibility= +75.0·10−6
|magnetic susceptibility ref= (at 298 K)<ref>{{Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110}}</ref>
|Young's modulus=78
|Shear modulus=30
|Bulk modulus=110
|Poisson ratio=0.37
|Mohs hardness=5.5
|Vickers hardness=1520–2060
|Brinell hardness=1450–2100
|CAS number=7440-58-6
|isotopes=
{{infobox element/isotopes decay | mn=172 | sym=Hf
|na=[[synthetic radioisotope|syn]] | hl=1.87 y
|dm=[[electron capture|ε]] | de=0.350 | link1=lutetium-172| pn=172 | ps=Lu}}
{{infobox element/isotopes decay | mn=174 | sym=Hf
|na=0.16% | hl=2×1015 y
|dm=[[alpha emission|α]] | de=2.495 | link1=ytterbium-170 | pn=170 | ps=Yb}}
{{infobox element/isotopes stable | mn=176 | sym=Hf | na=5.26% | n=104 |firstlinks=yes}}
{{infobox element/isotopes stable | mn=177 | sym=Hf | na=18.60% | n=105 |firstlinks=no}}
{{infobox element/isotopes stable | mn=178 | sym=Hf | na=27.28% | n=106 |firstlinks=no}}
{{infobox element/isotopes decay | mn=178[[Nuclear isomer|m2]] | sym=Hf
|na=syn | hl=31 y
|dm=[[Gamma ray|IT]] | de=2.446 | pn=178 | ps=Hf }}
{{infobox element/isotopes stable | mn=179 | sym=Hf | na=13.62% | n=107 |firstlinks=no}}
{{infobox element/isotopes stable | mn=180 | sym=Hf | na=35.08% | n=108 |firstlinks=no}}
{{infobox element/isotopes decay | mn=182 | sym=Hf
|na=syn | hl=8.9×106 y
|dm=[[beta emission|β−]] | de=0.373 | link1=tantalum-182 | pn=182 | ps=Ta }}
|isotopes comment=
|naming=after {{lang|la|[[Hafnia (Latin)|Hafnia]]}}. Latin for: [[Copenhagen]], where it was discovered
|predicted by=[[Dmitri Mendeleev]]
|prediction date=1869
|discovery and first isolation by=[[Dirk Coster]] and [[George de Hevesy]]
|discovery date=1922
|QID=Q1119
}}<noinclude>
{{Infobox element/element navigation|symbol=Hf}}
{{Template reference list}}
{{documentation|1=Template:Infobox element/doc}}
</noinclude>

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setup>Zinnober9: Corrected unrecognized parameter "categories"