Ti
Titanium
Element 22 · Transition metal
Titanium (Ti)
Titanium is a strong, light, corrosion-resistant metal. It is as strong as steel but about 45% lighter.
- Transition metal
- Period 4
- Group 4
- d-block
- solid at room temperature
Key properties
- Atomic mass
- 47.867
- u
- Electron configuration
- [Ar] 3d2 4s2
- Melting point
- 1,667.9 °C
- 1,941 K
- Boiling point
- 3,286.9 °C
- 3,560 K
- Density
- 4.5 g/cm³
- Electronegativity
- 1.54
- Pauling
- Atomic radius
- 187 pm
- van der Waals
- 1st ionisation energy
- 6.828 eV
Compare with every element:Electronegativity chartAtomic radius chartIonisation energy chartDensity chart of the elementsMelting point chartElectron configuration chart
Did you know?
Notable facts about titanium
- 01
Titanium bonds with bone, making it ideal for hip replacements and dental implants.
- 02
Titanium dioxide is the brilliant white pigment in paint, paper and toothpaste.
- 03
The SR-71 Blackbird spy plane was built mainly from titanium.
Applications
What is titanium used for?
- Aircraft engines and frames
- Medical implants
- White pigment (TiO₂)
- Sunscreen
History
Discovery & name origin
Atomic structure
Atomic properties
Atomic structure
Atomic properties
- Atomic number
- 22
- Atomic mass
- 47.867 u
- Group
- 4
- Period
- 4
- Block
- d-block
- Electron configuration
- [Ar] 3d2 4s2
- Full configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d2
- Electrons per shell
- 2, 8, 10, 2
- Electronegativity (Pauling)
- 1.54
- Electron affinity
- 0.079 eV
- Atomic radius (van der Waals)
- 187 pm
- Stable isotopes
- 5
Oxidation states
Highlighted: common oxidation states (+4, +3, +2).
Successive ionisation energies
Energy to remove each electron in turn (kJ/mol). Big jumps show where a new, inner shell begins.
- 1st658.8
- 2nd1,309.8
- 3rd2,652.5
- 4th4,174.6
- 5th9,581
- 6th11,533
- 7th13,590
- 8th16,440
Physical
Physical properties & colour
Physical
Physical properties & colour
- State at 20 °C
- Solid
- Melting point
- 1,941 K · 1,667.9 °C · 3,034.1 °F
- Boiling point
- 3,560 K · 3,286.9 °C · 5,948.3 °F
- Density
- 4.5 g/cm³
- Molar heat capacity
- 25.06 J/(mol·K)
- Appearance
- Silvery grey-white metallic
- CPK model colour
- Copied
The CPK colour is the convention used for this element’s atoms in molecular models.
FAQ
Titanium questions
What is Ti on the periodic table?
Ti is the symbol for titanium, element 22 on the periodic table. It sits in group 4, period 4, in the transition metal category, and has an atomic mass of 47.867.
What is the atomic number of titanium?
Titanium has atomic number 22, so every titanium atom has 22 protons in its nucleus. Its symbol is Ti and its atomic mass is 47.867.
Who discovered titanium?
Titanium was discovered by William Gregor in 1791 (England). The name comes from from the Titans of Greek mythology.
What is titanium used for?
Titanium is used for: aircraft engines and frames; medical implants; white pigment (TiO₂); sunscreen.
Is titanium a metal?
Yes. Titanium is a transition metal, one of the metallic elements.
What is the electron configuration of titanium?
The electron configuration of titanium is [Ar] 3d2 4s2. Its 22 electrons are arranged in shells as 2, 8, 10, 2.