Titanium vs Strontium
Periodic Table
Symbol
Ti
Sr
Group Number
4
14
2
16
Period Number
4
5
Block
d block
s block
Element Family
Transition Metal
Alkaline Earth
CAS Number
7440326
99+
7440246
99+
Space Group Name
P63/mmc
Fm_ 3m
Space Group Number
194.00
5
225.00
2
Facts
Interesting Facts
- The only metal which burns in Nitrogen is Titanium.
- Titanium is also known as corrosion resistant metal.
- Strontium element is softer than Calcium.
- Silvery Strontium turns yellow, if exposed to air.
Sources
Found in Minerals, Mining
Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
W. Gregor & J. Berzelius
William Cruickshank
Discovery
In 1791
In 1787
Abundance
Abundance In Universe
3 * 10-4 %
9
4 * 10-6 %
14
Abundance In Sun
~0.0004 %
9
~0.000005 %
15
Abundance In Meteorites
0.05 %
11
0.00 %
15
Abundance In Earth's Crust
0.66 %
7
0.04 %
10
Abundance In Oceans
0.00 %
15
0.00 %
4
Abundance In Humans
Not Available
0.00 %
7
Uses
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.
- Strontium metal is used to producing ferrite magnets as well as refining zinc.
- By-product of nuclear reactors called Strontium-90 is a radioactive isotope; it is absorbed by tissues and destroys bone marrow and cancer growth.
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Ammunition Industry, Chemical Industry
Medical Uses
Dentistry, Surgical Instruments Manufacturing
NA
Other Uses
Alloys, Jewellery, Sculptures, Statues
Alloys
Biological Properties
Toxicity
Non Toxic
Non Toxic
Present in Human Body
Yes
Yes
In Blood
0.05 Blood/mg dm-3
16
0.03 Blood/mg dm-3
19
In Bone
Not Available
140.00 p.p.m.
7
Physical Properties
Melting Point
1,660.00 °C
18
769.00 °C
99+
Boiling Point
3,287.00 °C
22
1,384.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery Gray-White
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.00
6
1.50
18
Brinell Hardness
716.00 MPa
15
Not Available
Vickers Hardness
830.00 MPa
14
Not Available
Speed of Sound
5,090.00 m/s
9
Not Available
Optical Properties
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Ti
Sr
Isotopes
Known Isotopes
23
16
27
12
Electronegativity
Pauling Electronegativity
1.54
26
0.95
99+
Sanderson Electronegativity
1.09
20
0.72
27
Allred Rochow Electronegativity
1.32
23
0.99
37
Mulliken-Jaffe Electronegativity
Not Available
1.00
18
Allen Electronegativity
1.38
32
0.96
40
Electropositivity
Pauling Electropositivity
2.46
28
3.05
7
Ionization Energies
1st Energy Level
658.80 kJ/mol
39
549.50 kJ/mol
99+
2nd Energy Level
1,309.80 kJ/mol
99+
1,064.20 kJ/mol
99+
3rd Energy Level
2,652.50 kJ/mol
99+
4,138.00 kJ/mol
10
4th Energy Level
4,174.60 kJ/mol
32
5,500.00 kJ/mol
13
5th Energy Level
9,581.00 kJ/mol
5
6,910.00 kJ/mol
18
6th Energy Level
11,533.00 kJ/mol
6
8,760.00 kJ/mol
18
7th Energy level
13,590.00 kJ/mol
6
10,230.00 kJ/mol
19
8th Energy Level
16,440.00 kJ/mol
8
11,800.00 kJ/mol
19
9th Energy Level
18,530.00 kJ/mol
11
15,600.00 kJ/mol
17
10th Energy Level
20,833.00 kJ/mol
15
17,100.00 kJ/mol
19
11th Energy Level
25,575.00 kJ/mol
14
31,270.00 kJ/mol
6
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+
1.64 g/amp-hr
99+
Electron Work Function
4.33 eV
17
2.59 eV
99+
Other Chemical Properties
Chemical Stability, Ionization
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Atomic Properties
Atomic Number
22
99+
38
99+
Electron Configuration
[Ar] 3d2 4s2
[Kr] 5s2
Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
Crystal Lattice
HCP-Crystal-Structure-of-Titanium.jpg#100
FCC-Crystal-Structure-of-Strontium.jpg#100
Atom
Number of Protons
22
99+
38
99+
Number of Neutrons
26
99+
50
99+
Number of Electrons
22
99+
38
99+
Radius of an Atom
Atomic Radius
147.00 pm
34
215.00 pm
5
Covalent Radius
160.00 pm
30
195.00 pm
15
Van der Waals Radius
200.00 pm
28
249.00 pm
7
Atomic Weight
47.87 amu
99+
87.62 amu
99+
Atomic Volume
10.64 cm3/mol
99+
33.70 cm3/mol
6
Adjacent Atomic Numbers
Valence Electron Potential
95.20 (-eV)
10
25.70 (-eV)
99+
Lattice Constant
295.08 pm
99+
608.49 pm
6
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
4.51 g/cm3
99+
2.64 g/cm3
99+
Density When Liquid (at m.p.)
4.11 g/cm3
99+
2.38 g/cm3
99+
Tensile Strength
434.00 MPa
9
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
121.00 (Pa)
1
Vapor Pressure at 2000 K
0.98 (Pa)
14
Not Available
Elasticity properties
Shear Modulus
44.00 GPa
17
6.03 GPa
99+
Bulk Modulus
110.00 GPa
15
Not Available
Young's Modulus
116.00 GPa
18
15.70 GPa
99+
Poisson Ratio
0.32
12
0.28
17
Other Mechanical Properties
Ductile
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
4.51
99+
2.64
99+
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Properties
Electrical Property
Poor Conductor
NA
Resistivity
420.00 nΩ·m
12
132.00 nΩ·m
24
Electrical Conductivity
0.02 106/cm Ω
99+
0.08 106/cm Ω
26
Electron Affinity
7.60 kJ/mol
37
5.03 kJ/mol
38
Thermal Properties
Specific Heat
0.52 J/(kg K)
9
0.30 J/(kg K)
18
Molar Heat Capacity
25.06 J/mol·K
99+
26.40 J/mol·K
28
Thermal Conductivity
21.90 W/m·K
99+
35.40 W/m·K
37
Critical Temperature
Not Available
Not Available
Thermal Expansion
8.60 µm/(m·K)
99+
22.50 µm/(m·K)
18
Enthalpy
Enthalpy of Vaporization
429.00 kJ/mol
15
150.00 kJ/mol
99+
Enthalpy of Fusion
15.48 kJ/mol
19
9.16 kJ/mol
38
Enthalpy of Atomization
468.60 kJ/mol
15
163.20 kJ/mol
99+
Standard Molar Entropy
27.30 J/mol.K
99+
55.00 J/mol.K
26
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