Symbol
Ti
  
Tl
  
Period Number
4
  
6
  
Block
d block
  
p block
  
Element Family
Transition Metal
  
Post-Transition
  
Space Group Name
P63/mmc
  
P63/mmc
  
Interesting Facts
- The only metal which burns in Nitrogen is Titanium.
- Titanium is also known as corrosion resistant metal.
  
- Compounds of Thallium metal are highly Toxic.
- Thallium metal is being suspected as a human carcinogen.
  
Sources
Found in Minerals, Mining
  
Found As a By-product, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
W. Gregor & J. Berzelius
  
William Crookes
  
Discovery
In 1791
  
In 1861
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
Abundance In Earth's Crust
Uses & Benefits
- Its alloys are used in spacecraft, aircraft and ammunition industry.
- Its pipes are used in distillation plants, submarines, hulls of big ships, etc.
  
- Thallium is a toxic metal and hence it has limited uses. Thallium metal is mostly used for producing photoelectric cells.
- In thermometer’s mercury alloy has 8% of thallium, as it has a melting point lower than 20°C.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
Chemical Industry
  
Medical Uses
Dentistry, Surgical Instruments Manufacturing
  
Medical Research
  
Other Uses
Alloys, Jewellery, Sculptures, Statues
  
Alloys
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Highly Toxic
  
Present in Human Body
Yes
  
Yes
  
In Blood
0.05 Blood/mg dm-3
  
16
0.00 Blood/mg dm-3
  
34
In Bone
Not Available
  
0.00 p.p.m.
  
33
Melting Point
1,660.00 °C
  
18
Boiling Point
3,287.00 °C
  
22
1,457.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray-White
  
Silvery White
  
Luster
Metallic
  
NA
  
Hardness
  
  
Vickers Hardness
Not Available
  
Speed of Sound
5,090.00 m/s
  
9
818.00 m/s
  
99+
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ti
  
Tl
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
658.80 kJ/mol
  
39
589.40 kJ/mol
  
99+
2nd Energy Level
1,309.80 kJ/mol
  
99+
1,971.00 kJ/mol
  
14
3rd Energy Level
2,652.50 kJ/mol
  
99+
2,878.00 kJ/mol
  
32
4th Energy Level
4,174.60 kJ/mol
  
32
Not Available
  
5th Energy Level
9,581.00 kJ/mol
  
5
Not Available
  
6th Energy Level
11,533.00 kJ/mol
  
6
Not Available
  
7th Energy level
13,590.00 kJ/mol
  
6
Not Available
  
8th Energy Level
16,440.00 kJ/mol
  
8
Not Available
  
9th Energy Level
18,530.00 kJ/mol
  
11
Not Available
  
10th Energy Level
20,833.00 kJ/mol
  
15
Not Available
  
11th Energy Level
25,575.00 kJ/mol
  
14
Not Available
  
12th Energy Level
28,125.00 kJ/mol
  
14
Not Available
  
13th Energy Level
76,015.00 kJ/mol
  
1
Not Available
  
14th Energy Level
83,280.00 kJ/mol
  
2
Not Available
  
15th Energy Level
90,880.00 kJ/mol
  
3
Not Available
  
16th Energy Level
100,700.00 kJ/mol
  
4
Not Available
  
17th Energy Level
109,100.00 kJ/mol
  
5
Not Available
  
18th Energy Level
117,800.00 kJ/mol
  
6
Not Available
  
19th Energy Level
129,900.00 kJ/mol
  
7
Not Available
  
20th Energy Level
137,530.00 kJ/mol
  
9
Not Available
  
Electrochemical Equivalent
0.45 g/amp-hr
  
99+
7.63 g/amp-hr
  
2
Other Chemical Properties
Chemical Stability, Ionization
  
Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Ar] 3d2 4s2
  
[Xe] 4f14 5d10 6s2 6p1
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
HCP-Crystal-Structure-of-Titanium.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Volume
10.64 cm3/mol
  
99+
17.20 cm3/mol
  
31
Adjacent Atomic Numbers
  
  
Valence Electron Potential
95.20 (-eV)
  
10
9.60 (-eV)
  
99+
Lattice Angles
π/2, π/2, 2 π/3
  
π/2, π/2, 2 π/3
  
Lattice C/A Ratio
Not Available
  
Density
  
  
Density At Room Temperature
4.51 g/cm3
  
99+
11.85 g/cm3
  
31
Density When Liquid (at m.p.)
4.11 g/cm3
  
99+
11.22 g/cm3
  
13
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Ductile
  
Ductile, Sectile
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Diamagnetic
  
Electrical Properties
  
  
Electrical Property
Poor Conductor
  
Conductor
  
Resistivity
420.00 nΩ·m
  
12
Electrical Conductivity
0.02 106/cm Ω
  
99+
0.06 106/cm Ω
  
32
Electron Affinity
7.60 kJ/mol
  
37
19.20 kJ/mol
  
32
Specific Heat
0.52 J/(kg K)
  
9
0.13 J/(kg K)
  
39
Molar Heat Capacity
25.06 J/mol·K
  
99+
26.32 J/mol·K
  
29
Thermal Conductivity
21.90 W/m·K
  
99+
46.10 W/m·K
  
33
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
8.60 µm/(m·K)
  
99+
29.90 µm/(m·K)
  
12
Enthalpy
  
  
Enthalpy of Vaporization
429.00 kJ/mol
  
15
162.10 kJ/mol
  
99+
Enthalpy of Fusion
15.48 kJ/mol
  
19
4.27 kJ/mol
  
99+
Enthalpy of Atomization
468.60 kJ/mol
  
15
179.90 kJ/mol
  
99+
Standard Molar Entropy
27.30 J/mol.K
  
99+
64.20 J/mol.K
  
19