Symbol
Li
  
Pt
  
Period Number
2
  
6
  
Block
s block
  
d block
  
Element Family
Alkali
  
Transition Metal
  
Space Group Name
Im_ 3m
  
Fm_ 3m
  
Interesting Facts
- Heat capacity of Lithium is very high.
- Lithium inflammable and highly explosive metal, hence it has to be stored properly.
  
- Platinum is the rarest metal from the Precious metal categories..
- Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Found in Minerals, Mining
  
Mining, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
Johan August Arfwedson
  
Antonio de Ulloa
  
Discovery
In 1817
  
In 1735
  
Abundance
  
  
Abundance In Sun
~0.0000009 %
  
19
Abundance In Earth's Crust
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available
  
Uses & Benefits
- The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
- it is also used in manufacturing non-rechargeable batteries.
  
- 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, Electrical Industry, Electronic Industry
  
Aerospace Industry, Chemical Industry
  
Medical Uses
NA
  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
  
Other Uses
Alloys
  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
  
Biological Properties
  
  
Toxicity
NA
  
Non Toxic
  
Present in Human Body
Yes
  
No
  
In Blood
0.00 Blood/mg dm-3
  
27
Not Available
  
In Bone
1.30 p.p.m.
  
17
Not Available
  
Melting Point
1,772.00 °C
  
16
Boiling Point
1,347.00 °C
  
99+
3,827.00 °C
  
15
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silvery White
  
Luster
NA
  
Metallic
  
Hardness
  
  
Vickers Hardness
Not Available
  
Speed of Sound
6,000.00 m/s
  
3
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
Li
  
Pt
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
520.20 kJ/mol
  
99+
870.00 kJ/mol
  
10
2nd Energy Level
7,298.10 kJ/mol
  
3
1,791.00 kJ/mol
  
21
3rd Energy Level
11,815.00 kJ/mol
  
4
Not Available
  
Electrochemical Equivalent
0.26 g/amp-hr
  
99+
1.82 g/amp-hr
  
35
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes
  
Chemical Stability, Anti Corrosion, Ionization
  
Electron Configuration
[He] 2s1
  
[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
  
  
Radius of an Atom
  
  
Atomic Volume
13.10 cm3/mol
  
39
9.09 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Previous Element
No Previous Element
  
Valence Electron Potential
19.00 (-eV)
  
99+
392.42 (-eV)
  
1
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
0.53 g/cm3
  
99+
21.45 g/cm3
  
11
Density When Liquid (at m.p.)
0.51 g/cm3
  
99+
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
  
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
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
0.11 106/cm Ω
  
19
0.10 106/cm Ω
  
21
Electron Affinity
59.60 kJ/mol
  
16
205.30 kJ/mol
  
2
Specific Heat
3.60 J/(kg K)
  
1
0.13 J/(kg K)
  
39
Molar Heat Capacity
24.86 J/mol·K
  
99+
25.86 J/mol·K
  
35
Thermal Conductivity
84.80 W/m·K
  
20
71.60 W/m·K
  
24
Critical Temperature
Not Available
  
Thermal Expansion
46.00 µm/(m·K)
  
7
8.80 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
134.70 kJ/mol
  
99+
510.50 kJ/mol
  
11
Enthalpy of Fusion
3.00 kJ/mol
  
99+
19.70 kJ/mol
  
12
Enthalpy of Atomization
160.70 kJ/mol
  
99+
565.00 kJ/mol
  
11
Standard Molar Entropy
29.10 J/mol.K
  
99+
41.60 J/mol.K
  
36