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


Name Titanium Symbol Ti
atomic number 22 Atomic weight 47.90
Density @ 293 K 4.50 g/cm3 Atomic volume 10.64 cm3/mol
Group Trans. Met. discovered 1791


state (s, l, g) s
melting point 1933.2 K boiling point 3558 K
Heat of fusion 15.450 kJ/mol Heat of vaporization 421.00 kJ/mol
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1st ionization energy 658 kJ/mole electronegativity 1.54
2nd ionization energy 1310.3 kJ/mole electron affinity 7.6 kJ/mole
3rd ionization energy 2652.5 kJ/mole Specific heat 0.52 J/gK
heat atomization 470 kJ/mole atoms

Oxidation & Electrons

Shells 2,8,10,2 electron configuration [Ar] 3d2 4s2
minimum oxidation number -1 maximum oxidation number 4
min. common oxidation no. 0 max. common oxidation no. 4
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Appearance & Characteristics

structure hcp: hexagonal close pkd color gray
uses steel,white pigment(TiO2) toxicity
hardness mohs characteristics max strength/weight ratio


reaction with air mild, w/ht = TiO2, TiN reaction with 6M HCl none
reaction with 6M HCl none reaction with 15M HNO3 passivated
reaction with 6M NaOH none
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Other Forms

number of isotopes 5 hydride(s) TiH2
oxide(s) TiO Ti2O3 TiO2 + more chloride(s) TiCl2 TiCl3 TiCl4


ionic radius (2- ion) pm ionic radius (1- ion) pm
atomic radius 147 pm ionic radius (1+ ion) pm
ionic radius (2+ ion) 100 pm ionic radius (3+ ion) 81 pm
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thermal conductivity 21.9 J/m-sec-deg electrical conductivity 23.81 1/mohm-cm
polarizability 14.6 A^3


source Ilmenite, rutile(oxide) rel. abund. solar system 3.380 log
abundance earth's crust 3.8 log cost, pure 6.1 $/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.