Polonium Titanium Comparison
Periodic Table
Symbol
Po
Ti
Group Number
16
2
4
14
Period Number
6
4
Block
p block
d block
Element Family
Post-Transition
Transition Metal
CAS Number
7440086
99+
7440326
99+
Space Group Name
Pm-3m
P63/mmc
Space Group Number
221.00
3
194.00
5
Facts
Interesting Facts
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
- The only metal which burns in Nitrogen is Titanium.
- Titanium is also known as corrosion resistant metal.
Sources
Mining, Ores of metals
Found in Minerals, Mining
History
Who Discovered
Pierre Curie and Marie Curie
W. Gregor & J. Berzelius
Discovery
In 1898
In 1791
Abundance
Abundance In Universe
Not Available
3 * 10-4 %
9
Abundance In Sun
~-9999 %
~0.0004 %
9
Abundance In Meteorites
Not Available
0.05 %
11
Abundance In Earth's Crust
Not Available
0.66 %
7
Abundance In Oceans
0.00 %
99+
0.00 %
15
Uses
Uses & Benefits
- Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
- A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
- Its alloys are used in spacecraft, aircraft and ammunition industry.
- Its pipes are used in distillation plants, submarines, hulls of big ships, etc.
Industrial Uses
Aerospace Industry, Ammunition Industry
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
Dentistry, Surgical Instruments Manufacturing
Other Uses
Alloys
Alloys, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Highly Toxic
Non Toxic
Present in Human Body
No
Yes
In Blood
0.00 Blood/mg dm-3
37
0.05 Blood/mg dm-3
16
In Bone
0.00 p.p.m.
36
Not Available
Physical Properties
Melting Point
254.00 °C
99+
1,660.00 °C
18
Boiling Point
962.00 °C
99+
3,287.00 °C
22
Appearance
Physical State
Solid
Solid
Color
Silver
Silvery Gray-White
Luster
NA
Metallic
Hardness
Mohs Hardness
Not Available
6.00
6
Brinell Hardness
Not Available
716.00 MPa
15
Vickers Hardness
Not Available
830.00 MPa
14
Speed of Sound
Not Available
5,090.00 m/s
9
Optical Properties
Allotropes
Yes
No
α Allotropes
α-polonium
Not Available
β Allotropes
β-polonium
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Po
Ti
Isotopes
Known Isotopes
29
10
23
16
Electronegativity
Pauling Electronegativity
2.00
7
1.54
26
Sanderson Electronegativity
Not Available
1.09
20
Allred Rochow Electronegativity
1.76
2
1.32
23
Mulliken-Jaffe Electronegativity
2.48
1
Not Available
Allen Electronegativity
2.19
2
1.38
32
Electropositivity
Pauling Electropositivity
2.00
99+
2.46
28
Ionization Energies
1st Energy Level
812.10 kJ/mol
14
658.80 kJ/mol
39
2nd Energy Level
Not Available
1,309.80 kJ/mol
99+
3rd Energy Level
Not Available
2,652.50 kJ/mol
99+
4th Energy Level
Not Available
4,174.60 kJ/mol
32
5th Energy Level
Not Available
9,581.00 kJ/mol
5
6th Energy Level
Not Available
11,533.00 kJ/mol
6
7th Energy level
Not Available
13,590.00 kJ/mol
6
8th Energy Level
Not Available
16,440.00 kJ/mol
8
9th Energy Level
Not Available
18,530.00 kJ/mol
11
10th Energy Level
Not Available
20,833.00 kJ/mol
15
11th Energy Level
Not Available
25,575.00 kJ/mol
14
12th Energy Level
Not Available
28,125.00 kJ/mol
14
13th Energy Level
Not Available
76,015.00 kJ/mol
1
14th Energy Level
Not Available
83,280.00 kJ/mol
2
15th Energy Level
Not Available
90,880.00 kJ/mol
3
16th Energy Level
Not Available
100,700.00 kJ/mol
4
17th Energy Level
Not Available
109,100.00 kJ/mol
5
18th Energy Level
Not Available
117,800.00 kJ/mol
6
19th Energy Level
Not Available
129,900.00 kJ/mol
7
20th Energy Level
Not Available
137,530.00 kJ/mol
9
Electrochemical Equivalent
3.90 g/amp-hr
8
0.45 g/amp-hr
99+
Electron Work Function
Not Available
4.33 eV
17
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Ionization
Atomic Properties
Atomic Number
84
32
22
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4
[Ar] 3d2 4s2
Crystal Structure
Monoclinic (MON)
Hexagonal Close Packed (HCP)
Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100
HCP-Crystal-Structure-of-Titanium.jpg#100
Atom
Number of Protons
84
32
22
99+
Number of Neutrons
125
19
26
99+
Number of Electrons
84
32
22
99+
Radius of an Atom
Atomic Radius
168.00 pm
23
147.00 pm
34
Covalent Radius
140.00 pm
99+
160.00 pm
30
Van der Waals Radius
197.00 pm
29
200.00 pm
28
Atomic Weight
209.00 amu
28
47.87 amu
99+
Atomic Volume
22.23 cm3/mol
13
10.64 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
95.20 (-eV)
10
Lattice Constant
335.90 pm
99+
295.08 pm
99+
Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
9.20 g/cm3
99+
4.51 g/cm3
99+
Density When Liquid (at m.p.)
9.40 g/cm3
19
4.11 g/cm3
99+
Tensile Strength
Not Available
434.00 MPa
9
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 2000 K
Not Available
0.98 (Pa)
14
Elasticity properties
Shear Modulus
Not Available
44.00 GPa
17
Bulk Modulus
Not Available
110.00 GPa
15
Young's Modulus
Not Available
116.00 GPa
18
Poisson Ratio
Not Available
0.32
12
Other Mechanical Properties
NA
Ductile
Magnetic Properties
Magnetic Characteristics
Specific Gravity
9.32
31
4.51
99+
Magnetic Ordering
Nonmagnetic
Paramagnetic
Electrical Properties
Electrical Property
Conductor
Poor Conductor
Resistivity
0.40 nΩ·m
99+
420.00 nΩ·m
12
Electrical Conductivity
0.02 106/cm Ω
99+
0.02 106/cm Ω
99+
Electron Affinity
183.30 kJ/mol
3
7.60 kJ/mol
37
Thermal Properties
Specific Heat
0.12 J/(kg K)
40
0.52 J/(kg K)
9
Molar Heat Capacity
26.40 J/mol·K
28
25.06 J/mol·K
99+
Thermal Conductivity
20.00 W/m·K
99+
21.90 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
23.50 µm/(m·K)
16
8.60 µm/(m·K)
99+
Enthalpy
Enthalpy of Vaporization
60.30 kJ/mol
99+
429.00 kJ/mol
15
Enthalpy of Fusion
13.00 kJ/mol
26
15.48 kJ/mol
19
Enthalpy of Atomization
134.00 kJ/mol
99+
468.60 kJ/mol
15
Standard Molar Entropy
Not Available
27.30 J/mol.K
99+
|
||
|
||
|
