General | States | Energies | Oxidation & Electrons |Appearance & Characteristics
Reactions | Other Forms |Radius | Conductivity | Abundance
Encyclopedia Britannica articles


Name Tungsten Symbol W
atomic number 74 Atomic weight 183.85
Density @ 293 K 19.3 g/cm3 Atomic volume 9.53 cm3/mol
Group Trans. Met. discovered 1783


state (s, l, g) s
melting point 3683.2 K boiling point 5773 K
Heat of fusion 35.40 kJ/mol Heat of vaporization 824.0 kJ/mol
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1st ionization energy 770 kJ/mole electronegativity 2.36
2nd ionization energy kJ/mole electron affinity 78.6 kJ/mole
3rd ionization energy kJ/mole Specific heat 0.13 J/gK
heat atomization 849 kJ/mole atoms

Oxidation & Electrons

Shells 2,8,18,32,12,2 electron configuration [Xe] 4f14 5d4 6s2
minimum oxidation number -2 maximum oxidation number 6
min. common oxidation no. 0 max. common oxidation no. 6
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Appearance & Characteristics

structure bcc: body-centered cubic color bluish-gray
uses WC drill bits, bulb wire toxicity
hardness mohs characteristics highest melting metal


reaction with air none, w/ht = WO3 reaction with 6M HCl none
reaction with 6M HCl none reaction with 15M HNO3
reaction with 6M NaOH
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Other Forms

number of isotopes 5 hydride(s)
oxide(s) WO2 WO3 chloride(s) WClx [x=2-6]


ionic radius (2- ion) pm ionic radius (1- ion) pm
atomic radius 139 pm ionic radius (1+ ion) pm
ionic radius (2+ ion) pm ionic radius (3+ ion) pm
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thermal conductivity 173 J/m-sec-deg electrical conductivity 176.991 1/mohm-cm
polarizability 11.1 A^3


source Scheelite,wolframite(oxide) rel. abund. solar system -0.876 log
abundance earth's crust 0.2 log cost, pure 11 $/100g
cost, bulk $/100g
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World Wide Web presentation of Chemicool Periodic Table is © Copyright 1996-99 by David D. Hsu. Some data were provided by and used with the permission of JCE Software and is owned and copyright by the Division of Chemical Education, Inc. Additional data were provided by Perkin-Elmer through Peter Lykos of IIT. The information may not be redistributed without the permission of David Hsu or JCE Software.