Symbol
Ru
  
Pt
  
Period Number
5
  
6
  
Block
d block
  
d block
  
Element Family
Transition Metal
  
Transition Metal
  
Space Group Name
P63/mmc
  
Fm_ 3m
  
Interesting Facts
- Ruthenium element has been extracted from used nuclear fuel.
- Ruthenium metal also produces as a by-product of the Nickel mining.
  
- Platinum is the rarest metal from the Precious metal categories..
- Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
By-product of Nickel Refining, Found in Minerals, Mining
  
Mining, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
Karl Ernst Claus
  
Antonio de Ulloa
  
Discovery
In 1844
  
In 1735
  
Abundance
  
  
Abundance In Sun
~0.0000005 %
  
22
~0.0000009 %
  
19
Abundance In Earth's Crust
Abundance In Oceans
Not Available
  
Uses & Benefits
- It is used for producing chip resistors and contact.
- Ruthenium oxide is used to coat the anodes cells for chlorine production in chemical industry. It also works as catalysts for ammonia and acetic acid reaction.
  
- 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, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
Aerospace Industry, Chemical Industry
  
Medical Uses
Medical Research
  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
  
Other Uses
Alloys
  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
  
Biological Properties
  
  
Toxicity
Low Toxic
  
Non Toxic
  
Present in Human Body
No
  
No
  
Melting Point
1,772.00 °C
  
16
Boiling Point
3,900.00 °C
  
14
3,827.00 °C
  
15
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silvery White
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
2,160.00 MPa
  
3
Vickers Hardness
Not Available
  
Speed of Sound
5,970.00 m/s
  
4
2,800.00 m/s
  
29
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ru
  
Pt
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Allred Rochow Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
710.20 kJ/mol
  
32
870.00 kJ/mol
  
10
2nd Energy Level
710.22 kJ/mol
  
99+
1,791.00 kJ/mol
  
21
3rd Energy Level
2,747.00 kJ/mol
  
37
Not Available
  
Electrochemical Equivalent
1.26 g/amp-hr
  
99+
1.82 g/amp-hr
  
35
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Chemical Stability, Anti Corrosion, Ionization
  
Electron Configuration
[Kr] 4d7 5s1
  
[Xe] 4f14 5d9 6s1
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
rystal-Structure-of-Ruthenium.jpg#100
  
FCC-Crystal-Structure-of-Platinum.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
101.07 amu
  
99+
Atomic Volume
8.30 cm3/mol
  
99+
9.09 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
64.00 (-eV)
  
22
392.42 (-eV)
  
1
Lattice Angles
π/2, π/2, 2 π/3
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Density
  
  
Density At Room Temperature
12.45 g/cm3
  
27
21.45 g/cm3
  
11
Density When Liquid (at m.p.)
10.65 g/cm3
  
16
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Other Mechanical Properties
Ductile, Malleable
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Paramagnetic
  
Permeability
Not Available
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Resistivity
105.00 nΩ·m
  
30
Electrical Conductivity
0.14 106/cm Ω
  
16
0.10 106/cm Ω
  
21
Electron Affinity
101.30 kJ/mol
  
10
205.30 kJ/mol
  
2
Specific Heat
0.24 J/(kg K)
  
24
0.13 J/(kg K)
  
39
Molar Heat Capacity
24.06 J/mol·K
  
99+
25.86 J/mol·K
  
35
Thermal Conductivity
117.00 W/m·K
  
13
71.60 W/m·K
  
24
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
6.40 µm/(m·K)
  
99+
8.80 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
567.80 kJ/mol
  
10
510.50 kJ/mol
  
11
Enthalpy of Fusion
25.50 kJ/mol
  
7
19.70 kJ/mol
  
12
Enthalpy of Atomization
603.00 kJ/mol
  
9
565.00 kJ/mol
  
11
Standard Molar Entropy
28.50 J/mol.K
  
99+
41.60 J/mol.K
  
36