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Properties of Gallium and Platinum

Gallium
Platinum
Properties of Platinum & Gallium


Physical Properties
Melting Point
29.78 °C   
99+
1,772.00 °C   
16
Boiling Point
2,403.00 °C   
99+
3,827.00 °C   
15
Hardness
  
  
Mohs Hardness
1.50   
18
3.50   
11
Brinell Hardness
56.80 MPa   
99+
300.00 MPa   
34
Vickers Hardness
Not Available   
400.00 MPa   
25
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
73.00 %   
8
Speed of Sound
2,740.00 m/s   
31
2,800.00 m/s   
29
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
Ga   
Pt   
Isotopes
  
  
Known Isotopes
24   
15
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.81   
15
2.28   
3
Sanderson Electronegativity
2.42   
2
Not Available   
Allred Rochow Electronegativity
1.82   
1
1.44   
17
Mulliken-Jaffe Electronegativity
2.01   
5
Not Available   
Allen Electronegativity
1.76   
14
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
2.19   
39
1.72   
99+
Ionization Energies
  
  
1st Energy Level
578.80 kJ/mol   
99+
870.00 kJ/mol   
10
2nd Energy Level
1,979.30 kJ/mol   
13
1,791.00 kJ/mol   
21
3rd Energy Level
2,963.00 kJ/mol   
28
Not Available   
Electrochemical Equivalent
0.87 g/amp-hr   
99+
1.82 g/amp-hr   
35
Electron Work Function
4.20 eV   
23
5.65 eV   
1
Other Chemical Properties
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization   
Mechanical Properties
Density
  
  
Density At Room Temperature
5.91 g/cm3   
99+
21.45 g/cm3   
11
Density When Liquid (at m.p.)
6.10 g/cm3   
99+
19.77 g/cm3   
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
15
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.07 (Pa)   
18
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
61.00 GPa   
14
Bulk Modulus
Not Available   
230.00 GPa   
6
Young's Modulus
9.80 GPa   
99+
168.00 GPa   
14
Poisson Ratio
0.47   
1
0.38   
6
Other Mechanical Properties
NA   
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable   
Periodic Table
Symbol
Ga   
Pt   
Group Number
13   
5
10   
8
Period Number
4   
6   
Block
?
The p-block is on the right side of the periodic table and includes elements from the six columns beginning with column 13 and ending with column 18. Helium, though being in the top of group 18, is not included in the p-block.p block   
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block   
Element Family
?
All post transition metals are placed in group number 13, 14 and 15 of periodic table. In fact, they are located between Transition Metals and Metalloids. Post transition metals have very poor mechanical properties.Post-​Transition   
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
Atomic Properties
Atomic Number
31   
99+
78   
38
Atomic Weight
69.72 amu   
99+
47.87 amu   
99+
Atomic Volume
11.80 cm3/mol   
99+
9.09 cm3/mol   
99+
Electron Configuration
[Ar] 3d10 4s2 4p1   
[Xe] 4f14 5d9 6s1   
Valence Electron Potential
69.70 (-eV)   
19
392.42 (-eV)   
1
Atom
  
  
Number of Protons
31   
99+
78   
38
Number of Neutrons
39   
99+
117   
24
Number of Electrons
31   
99+
78   
38
Crystal Structure
?
Orthorhombic lattices occur due to stretching a cubic lattice along two of its orthogonal sides. It gets result in a rectangular prism with a rectangular at base. These 3 bases intersect each other at 90°.Orthorhombic (ORTH)   
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100   
FCC-Crystal-Structure-of-Platinum.jpg#100   
Radius of an Atom
  
  
Atomic Radius
135.00 pm   
99+
139.00 pm   
39
Covalent Radius
122.00 pm   
99+
136.00 pm   
99+
Van der Waals Radius
187.00 pm   
32
175.00 pm   
36
Lattice Constant
451.97 pm   
18
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   
Adjacent Atomic Numbers
  
  
Next Element
Rubidium
  
Gold
  
Previous Element
Zinc
  
Iridium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
270.00 nΩ·m   
15
105.00 nΩ·m   
30
Electrical Conductivity
0.07 106/cm Ω   
29
0.10 106/cm Ω   
21
Electron Affinity
28.90 kJ/mol   
31
205.30 kJ/mol   
2
Electrical Property
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
5.91   
99+
21.45   
4
Magnetic Ordering
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
Permeability
Not Available   
0.00 H/m   
3
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.37 J/(kg K)   
16
0.13 J/(kg K)   
39
Thermal Conductivity
40.60 W/m·K   
34
71.60 W/m·K   
24
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.86 J/mol·K   
35
25.86 J/mol·K   
35
Thermal Expansion
18.00 µm/(m·K)   
24
8.80 µm/(m·K)   
99+
Standard Molar Entropy
40.80 J/mol.K   
38
41.60 J/mol.K   
36
Enthalpy
  
  
Enthalpy of Vaporization
256.10 kJ/mol   
36
510.50 kJ/mol   
11
Enthalpy of Fusion
5.59 kJ/mol   
99+
19.70 kJ/mol   
12
Enthalpy of Atomization
276.10 kJ/mol   
39
565.00 kJ/mol   
11
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