Symbol
Ga
  
Sn
  
Period Number
4
  
5
  
Block
p block
  
p block
  
Element Family
Post-Transition
  
Post-Transition
  
Space Group Name
Cmca
  
I41/amd
  
Interesting Facts
- A gram of Gallium metal can be bought for only three dollars.
- Gallium metal found in ores of following things Coal, Bauxite, Diaspore, Sphalerite, Germanite and Zinc.
  
- In the list of most abundant element Tin is ranked 49th.
- Tin metal does not react with water as well as does not corrode in it.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
Lecoq de Boisbaudran
  
Unknown
  
Discovery
In 1875
  
Before 3500 BC
  
Abundance
  
  
Abundance In Sun
~0.000004 %
  
16
~0.0000009 %
  
19
Abundance In Earth's Crust
Abundance In Humans
Not Available
  
Uses & Benefits
- Gallium arsenide is a very important component of many semiconductors and led manufacturing.
- Gallium nitride is also know as a semiconductor and it is used in Blu-ray technology, mobile smartphones and LED.
  
- Tin-niobium alloy is used for producing superconducting magnets.
-
Tin salt known as a tin II chloride, it is used as a mordant and as a reducing agent for dyeing calico and silk.
  
Industrial Uses
Electrical Industry, Electronic Industry
  
Automobile Industry, Chemical Industry, Food Industry
  
Medical Uses
Surgical Instruments Manufacturing
  
Dentistry
  
Other Uses
Alloys
  
NA
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Non Toxic
  
Present in Human Body
Yes
  
Yes
  
In Blood
0.08 Blood/mg dm-3
  
13
0.38 Blood/mg dm-3
  
10
In Bone
Not Available
  
1.40 p.p.m.
  
16
Boiling Point
2,403.00 °C
  
99+
2,270.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silvery White
  
Luster
Metallic
  
NA
  
Hardness
  
  
Speed of Sound
2,740.00 m/s
  
31
2,730.00 m/s
  
32
Optical Properties
  
  
Allotropes
No
  
Yes
  
α Allotropes
Not Available
  
Grey Tin (alpha Tin, Tin Pest)
  
β Allotropes
Not Available
  
White Tin (Beta Tin)
  
γ Allotropes
Not Available
  
Rhombic Tin (gamma Tin)
  
Chemical Formula
Ga
  
Sn
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
578.80 kJ/mol
  
99+
708.60 kJ/mol
  
33
2nd Energy Level
1,979.30 kJ/mol
  
13
1,411.80 kJ/mol
  
99+
3rd Energy Level
2,963.00 kJ/mol
  
28
2,943.00 kJ/mol
  
30
4th Energy Level
6,180.00 kJ/mol
  
8
3,930.30 kJ/mol
  
99+
5th Energy Level
Not Available
  
7,456.00 kJ/mol
  
13
Electrochemical Equivalent
0.87 g/amp-hr
  
99+
1.11 g/amp-hr
  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes
  
Ionization, Solubility
  
Electron Configuration
[Ar] 3d10 4s2 4p1
  
[Kr] 4d10 5s2 5p2
  
Crystal Structure
Orthorhombic (ORTH)
  
Tetragonal (TETR)
  
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100
  
TETR-Crystal-Structure-of-Tin.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
118.71 amu
  
99+
Atomic Volume
11.80 cm3/mol
  
99+
16.30 cm3/mol
  
32
Adjacent Atomic Numbers
  
  
Valence Electron Potential
69.70 (-eV)
  
19
83.50 (-eV)
  
14
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
5.91 g/cm3
  
99+
7.37 g/cm3
  
99+
Density When Liquid (at m.p.)
6.10 g/cm3
  
99+
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Other Mechanical Properties
NA
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Diamagnetic
  
Electrical Properties
  
  
Electrical Property
Semiconductor
  
Superconductor
  
Resistivity
270.00 nΩ·m
  
15
115.00 nΩ·m
  
28
Electrical Conductivity
0.07 106/cm Ω
  
29
0.09 106/cm Ω
  
23
Electron Affinity
28.90 kJ/mol
  
31
107.30 kJ/mol
  
8
Specific Heat
0.37 J/(kg K)
  
16
0.23 J/(kg K)
  
28
Molar Heat Capacity
25.86 J/mol·K
  
35
27.11 J/mol·K
  
20
Thermal Conductivity
40.60 W/m·K
  
34
66.80 W/m·K
  
25
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
18.00 µm/(m·K)
  
24
22.00 µm/(m·K)
  
20
Enthalpy
  
  
Enthalpy of Vaporization
256.10 kJ/mol
  
36
290.40 kJ/mol
  
32
Enthalpy of Fusion
5.59 kJ/mol
  
99+
7.03 kJ/mol
  
99+
Enthalpy of Atomization
276.10 kJ/mol
  
39
301.30 kJ/mol
  
35
Standard Molar Entropy
40.80 J/mol.K
  
38
51.20 J/mol.K
  
29