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Radium vs Platinum

Radium
Platinum
Platinum vs Radium


Periodic Table
Symbol
Ra  
Pt  
Group Number
2  
16
10  
8
Period Number
7  
6  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7440144  
99+
7440064  
99+
Space Group Name
Im_ 3m  
Fm_ 3m  
Space Group Number
229.00  
2
225.00  
3
Facts
Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Mining, Ores of metals  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
-  
Antonio de Ulloa  
Discovery
In 1898  
In 1735  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
20
Abundance In Sun
0.00 %  
26
0.00 %  
19
Abundance In Meteorites
-  
0.00 %  
25
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
-  
Abundance In Humans
0.00 %  
23
0.00 %  
24
Uses
Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
-  
Aerospace Industry, Chemical Industry  
Medical Uses
Pharmaceutical Industry  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
-  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Highly Toxic  
Non Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
34
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
700.00 °C  
99+
1,772.00 °C  
16
Boiling Point
1,737.00 °C  
99+
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
1.00  
22
3.50  
12
Brinell Hardness
700.00 MPa  
17
300.00 MPa  
99+
Vickers Hardness
140.00 MPa  
99+
400.00 MPa  
99+
Speed of Sound
3,150.00 m/s  
37
2,800.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.00  
99+
2.41  
6
Reflectivity
83.00 %  
6
73.00 %  
10
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ra  
Pt  
Isotopes
  
  
Known Isotopes
33  
6
35  
4
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
2.28  
4
Sanderson Electronegativity
0.89  
99+
2.28  
5
Allred Rochow Electronegativity
0.97  
39
1.44  
18
Mulliken-Jaffe Electronegativity
0.92  
99+
2.20  
6
Allen Electronegativity
0.89  
99+
1.72  
19
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
1.72  
99+
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
10
2nd Energy Level
979.00 kJ/mol  
99+
1,791.00 kJ/mol  
22
3rd Energy Level
509.30 kJ/mol  
99+
2,277.00 kJ/mol  
99+
4th Energy Level
5,093.00 kJ/mol  
27
8,702.00 kJ/mol  
6
5th Energy Level
5,090.00 kJ/mol  
99+
8,702.00 kJ/mol  
9
6th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
27
7th Energy level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
23
8th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
23
9th Energy Level
5,090.00 kJ/mol  
99+
5,660.00 kJ/mol  
99+
10th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
24
11th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
21
12th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
99+
13th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
16
14th Energy Level
5,090.00 kJ/mol  
99+
870.00 kJ/mol  
99+
15th Energy Level
50,900.00 kJ/mol  
99+
87,000.00 kJ/mol  
9
16th Energy Level
50,900.00 kJ/mol  
99+
870.00 kJ/mol  
99+
17th Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
27
18th Energy Level
5,090.00 kJ/mol  
99+
8,700.00 kJ/mol  
16
19th Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
25
20th Energy Level
509.00 kJ/mol  
99+
870.00 kJ/mol  
15
21st Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
38
22nd Energy Level
509.00 kJ/mol  
99+
870.00 kJ/mol  
13
23rd Energy Level
509.30 kJ/mol  
99+
870.10 kJ/mol  
39
24th Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
9
25th Energy Level
509.00 kJ/mol  
99+
870.00 kJ/mol  
7
26th Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
7
27th Energy Level
509.30 kJ/mol  
99+
870.10 kJ/mol  
6
28th Energy Level
509.30 kJ/mol  
99+
870.10 kJ/mol  
9
29th Energy Level
509.30 kJ/mol  
99+
870.00 kJ/mol  
10
30th Energy Level
509.00 kJ/mol  
99+
870.00 kJ/mol  
7
Electrochemical Equivalent
4.22 g/amp-hr  
6
1.82 g/amp-hr  
39
Electron Work Function
4.30 eV  
25
5.65 eV  
4
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Chemical Stability, Anti Corrosion, Ionization  
Atomic
Atomic Number
88  
30
78  
38
Electron Configuration
[Rn] 7s2  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Body Centered Cubic (BCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
88  
30
78  
38
Number of Neutrons
138  
17
117  
25
Number of Electrons
88  
30
78  
38
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
139.00 pm  
99+
Covalent Radius
221.00 pm  
3
136.00 pm  
99+
Van der Waals Radius
283.00 pm  
5
175.00 pm  
99+
Atomic Weight
226.00 amu  
26
47.87 amu  
99+
Atomic Volume
45.20 cm3/mol  
5
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Iridium
  
Next Element
Actinium
  
Gold
  
Valence Electron Potential
20.10 (-eV)  
99+
392.42 (-eV)  
1
Lattice Constant
514.80 pm  
15
392.42 pm  
27
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
99+
1.56  
99+
Mechanical
Density
  
  
Density At Room Temperature
5.50 g/cm3  
99+
21.45 g/cm3  
11
Density When Liquid (at m.p.)
5.50 g/cm3  
99+
19.77 g/cm3  
12
Tensile Strength
40.00 MPa  
99+
125.00 MPa  
26
Viscosity
0.00  
2
0.00  
16
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
33
0.07 (Pa)  
18
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
61.00 GPa  
14
Bulk Modulus
43.00 GPa  
33
230.00 GPa  
6
Young's Modulus
83.00 GPa  
25
168.00 GPa  
15
Poisson Ratio
0.31  
13
0.38  
6
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
21.45  
13
Magnetic Ordering
Nonmagnetic  
Paramagnetic  
Permeability
0.00 H/m  
9
0.00 H/m  
14
Susceptibility
0.00  
18
0.00  
20
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
100.00 nΩ·m  
31
105.00 nΩ·m  
30
Electrical Conductivity
0.00 106/cm Ω  
99+
0.10 106/cm Ω  
26
Electron Affinity
0.90 kJ/mol  
99+
205.30 kJ/mol  
2
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
20.05 J/mol·K  
99+
25.86 J/mol·K  
99+
Thermal Conductivity
18.60 W/m·K  
99+
71.60 W/m·K  
24
Critical Temperature
973.00 K  
99+
2,041.00 K  
19
Thermal Expansion
8.50 µm/(m·K)  
99+
8.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
113.00 kJ/mol  
99+
510.50 kJ/mol  
15
Enthalpy of Fusion
8.60 kJ/mol  
99+
19.70 kJ/mol  
12
Enthalpy of Atomization
163.00 kJ/mol  
99+
565.00 kJ/mol  
15
Standard Molar Entropy
71.00 J/mol.K  
14
41.60 J/mol.K  
99+
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