Symbol
Ga
  
Bh
  
Period Number
4
  
7
  
Block
p block
  
d block
  
Element Family
Post-Transition
  
Transition Metal
  
Space Group Name
Cmca
  
Not Available
  
Space Group Number
Not Available
  
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.
  
- Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Synthetically Produced
  
History
  
  
Who Discovered
Lecoq de Boisbaudran
  
Gesellschaft für Schwerionenforschung
  
Discovery
In 1875
  
In 1981
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.000004 %
  
16
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
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.
  
- Currently known uses of Bohrium metal are limited to research purpose only.
  
Industrial Uses
Electrical Industry, Electronic Industry
  
NA
  
Medical Uses
Surgical Instruments Manufacturing
  
NA
  
Other Uses
Alloys
  
Research Purposes
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Unknown
  
Present in Human Body
Yes
  
No
  
In Blood
0.08 Blood/mg dm-3
  
13
0.00 Blood/mg dm-3
  
37
In Bone
Not Available
  
0.00 p.p.m.
  
36
Melting Point
Not Available
  
Boiling Point
2,403.00 °C
  
99+
Not Available
  
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Unknown
  
Luster
Metallic
  
Unknown Luster
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
2,740.00 m/s
  
31
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ga
  
Bh
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
578.80 kJ/mol
  
99+
742.90 kJ/mol
  
23
2nd Energy Level
1,979.30 kJ/mol
  
13
1,688.50 kJ/mol
  
30
3rd Energy Level
2,963.00 kJ/mol
  
28
2,566.50 kJ/mol
  
99+
4th Energy Level
6,180.00 kJ/mol
  
8
3,598.90 kJ/mol
  
99+
5th Energy Level
Not Available
  
4,727.80 kJ/mol
  
37
6th Energy Level
Not Available
  
5,991.70 kJ/mol
  
24
7th Energy level
Not Available
  
7,226.80 kJ/mol
  
22
Electrochemical Equivalent
0.87 g/amp-hr
  
99+
Not Available
  
Electron Work Function
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes
  
Ionization, Radioactive Isotopes
  
Electron Configuration
[Ar] 3d10 4s2 4p1
  
[Rn] 5f14 6d5 7s2
  
Crystal Structure
Orthorhombic (ORTH)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Van der Waals Radius
Not Available
  
Atomic Volume
11.80 cm3/mol
  
99+
Not Available
  
Adjacent Atomic Numbers
  
  
Valence Electron Potential
69.70 (-eV)
  
19
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
5.91 g/cm3
  
99+
Density When Liquid (at m.p.)
6.10 g/cm3
  
99+
Not Available
  
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Elasticity properties
  
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
Unknown
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Diamagnetic
  
Unknown
  
Electrical Properties
  
  
Electrical Property
Semiconductor
  
Unknown
  
Resistivity
270.00 nΩ·m
  
15
Not Available
  
Electrical Conductivity
0.07 10
6/cm Ω
  
29
Not Available
  
Electron Affinity
28.90 kJ/mol
  
31
Not Available
  
Specific Heat
0.37 J/(kg K)
  
16
Not Available
  
Molar Heat Capacity
25.86 J/mol·K
  
35
Not Available
  
Thermal Conductivity
40.60 W/m·K
  
34
Not Available
  
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
18.00 µm/(m·K)
  
24
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
256.10 kJ/mol
  
36
Not Available
  
Enthalpy of Fusion
5.59 kJ/mol
  
99+
Not Available
  
Enthalpy of Atomization
276.10 kJ/mol
  
39
Not Available
  
Standard Molar Entropy
40.80 J/mol.K
  
38
Not Available