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Barium vs Platinum

Barium
Platinum
Platinum vs Barium


Periodic Table
Symbol
Ba   
Pt   
Group Number
2   
16
10   
8
Period Number
6   
6   
Block
s block   
d block   
Element Family
Alkaline Earth   
Transition Metal   
CAS Number
7440393   
99+
7440064   
99+
Space Group Name
Im_ 3m   
Fm_ 3m   
Space Group Number
229.00   
1
225.00   
2
Facts
Interesting Facts
  • Barium oxidizes very easily in the air.
  • All toxic compounds of Barium can easily dissolve in water.
  • Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of metals, Ores of Minerals   
History
  
  
Who Discovered
Carl Wilhelm Scheele   
Antonio de Ulloa   
Discovery
In 1772   
In 1735   
Abundance
  
  
Abundance In Universe
1 * 10-6 %   
16
5 * 10-7 %   
19
Abundance In Sun
~0.000001 %   
18
~0.0000009 %   
19
Abundance In Meteorites
0.00 %   
20
0.00 %   
25
Abundance In Earth's Crust
0.03 %   
11
0.00 %   
99+
Abundance In Oceans
0.00 %   
8
Not Available   
Abundance In Humans
0.00 %   
12
Not Available   
Uses
Uses & Benefits
  • It is sued in chemical paint manufacturing and glass manufacturing.
  • Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
Ammunition Industry, Automobile 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
Low Toxic   
Non Toxic   
Present in Human Body
Yes   
No   
In Blood
0.07 Blood/mg dm-3   
15
Not Available   
In Bone
70.00 p.p.m.   
9
Not Available   
Physical Properties
Melting Point
725.00 °C   
99+
1,772.00 °C   
16
Boiling Point
1,140.00 °C   
99+
3,827.00 °C   
15
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Silvery White   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
1.25   
19
3.50   
11
Brinell Hardness
Not Available   
300.00 MPa   
34
Vickers Hardness
Not Available   
400.00 MPa   
25
Speed of Sound
1,620.00 m/s   
99+
2,800.00 m/s   
29
Optical Properties
  
  
Reflectivity
Not Available   
73.00 %   
8
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
Ba   
Pt   
Isotopes
  
  
Known Isotopes
37   
2
35   
4
Electronegativity
  
  
Pauling Electronegativity
0.89   
99+
2.28   
3
Sanderson Electronegativity
0.68   
28
Not Available   
Allred Rochow Electronegativity
0.97   
38
1.44   
17
Mulliken-Jaffe Electronegativity
0.88   
22
Not Available   
Allen Electronegativity
0.88   
99+
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
3.11   
4
1.72   
99+
Ionization Energies
  
  
1st Energy Level
502.90 kJ/mol   
99+
870.00 kJ/mol   
10
2nd Energy Level
965.20 kJ/mol   
99+
1,791.00 kJ/mol   
21
3rd Energy Level
3,600.00 kJ/mol   
14
Not Available   
Electrochemical Equivalent
2.56 g/amp-hr   
20
1.82 g/amp-hr   
35
Electron Work Function
2.70 eV   
99+
5.65 eV   
1
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Anti Corrosion, Ionization   
Atomic Properties
Atomic Number
56   
99+
78   
38
Electron Configuration
[Xe] 6s2   
[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
56   
99+
78   
38
Number of Neutrons
81   
99+
117   
24
Number of Electrons
56   
99+
78   
38
Radius of an Atom
  
  
Atomic Radius
222.00 pm   
4
139.00 pm   
39
Covalent Radius
215.00 pm   
5
136.00 pm   
99+
Van der Waals Radius
268.00 pm   
6
175.00 pm   
36
Atomic Weight
137.33 amu   
99+
47.87 amu   
99+
Atomic Volume
39.24 cm3/mol   
5
9.09 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cesium
  
Iridium
  
Next Element
Lanthanum
  
Gold
  
Valence Electron Potential
21.30 (-eV)   
99+
392.42 (-eV)   
1
Lattice Constant
502.80 pm   
15
392.42 pm   
24
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
3.51 g/cm3   
99+
21.45 g/cm3   
11
Density When Liquid (at m.p.)
3.34 g/cm3   
99+
19.77 g/cm3   
2
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
7.11 (Pa)   
6
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.07 (Pa)   
18
Elasticity properties
  
  
Shear Modulus
4.90 GPa   
99+
61.00 GPa   
14
Bulk Modulus
9.60 GPa   
99+
230.00 GPa   
6
Young's Modulus
13.00 GPa   
99+
168.00 GPa   
14
Poisson Ratio
Not Available   
0.38   
6
Other Mechanical Properties
NA   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
3.62   
99+
21.45   
4
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
Not Available   
0.00 H/m   
3
Electrical Properties
  
  
Electrical Property
Superconductor   
Conductor   
Resistivity
332.00 nΩ·m   
13
105.00 nΩ·m   
30
Electrical Conductivity
0.03 106/cm Ω   
40
0.10 106/cm Ω   
21
Electron Affinity
13.95 kJ/mol   
36
205.30 kJ/mol   
2
Thermal Properties
Specific Heat
0.20 J/(kg K)   
30
0.13 J/(kg K)   
39
Molar Heat Capacity
28.07 J/mol·K   
12
25.86 J/mol·K   
35
Thermal Conductivity
18.40 W/m·K   
99+
71.60 W/m·K   
24
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
20.60 µm/(m·K)   
22
8.80 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
140.00 kJ/mol   
99+
510.50 kJ/mol   
11
Enthalpy of Fusion
7.66 kJ/mol   
99+
19.70 kJ/mol   
12
Enthalpy of Atomization
175.70 kJ/mol   
99+
565.00 kJ/mol   
11
Standard Molar Entropy
62.50 J/mol.K   
20
41.60 J/mol.K   
36
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