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Actinium
Actinium

Gallium
Gallium



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Actinium
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Actinium Gallium Comparison

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1 Periodic Table
1.1 Symbol
Ac
Ga
1.2 Group Number
NA13
Gadolinium Metal
0 17
2.3 Period Number
74
Lithium Metal
2 7
2.5 Block
f block
p block
2.6 Element Family
Actinide
Post-​Transition
2.7 CAS Number
74403487440553
Aluminium Metal
7429905 54386242
2.8 Space Group Name
Fm_ 3m
Cmca
2.9 Space Group Number
225.0064.00
Plutonium Metal
11 229
3 Facts
3.1 Interesting Facts
Not Available
  • 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.
3.2 Sources
Obtained by Treating Radium with Neutrons, Ores of metals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Friedrich Oskar Giesel
Lecoq de Boisbaudran
3.3.2 Discovery
In 1902
In 1875
3.4 Abundance
3.4.1 Abundance In Universe
NA1 * 10-6 %
Thallium Metal
5E-09 0.11
3.6.2 Abundance In Sun
~-9999 %~0.000004 %
Beryllium Metal
1E-08 0.1
3.6.5 Abundance In Meteorites
NA0.00 %
Gold Metal
1.7E-07 22
3.6.8 Abundance In Earth's Crust
NA0.00 %
Radium Metal
9.9E-12 8.1
3.6.11 Abundance In Oceans
NA0.00 %
Protactinium Metal
2E-23 1.1
3.6.14 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  • 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.
4.1.1 Industrial Uses
NA
Electrical Industry, Electronic Industry
4.1.2 Medical Uses
NA
Surgical Instruments Manufacturing
4.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
4.2 Biological Properties
4.2.1 Toxicity
Toxic
Non Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-30.08 Blood/mg dm-3
Plutonium Metal
0 1970
4.2.5 In Bone
0.00 p.p.m.NA
Plutonium Metal
0 170000
5 Physical
5.1 Melting Point
1,227.00 °C29.78 °C
Francium Metal
27 3410
5.2 Boiling Point
3,200.00 °C2,403.00 °C
Flerovium Metal
147 5660
5.3 Appearance
5.3.1 Physical State
Solid
Solid
5.3.2 Color
Silvery White
Silvery White
5.3.3 Luster
NA
Metallic
5.4 Hardness
5.4.1 Mohs Hardness
NA1.50
Cesium Metal
0.2 8.5
5.4.3 Brinell Hardness
NA56.80 MPa
Cesium Metal
0.14 3490
5.4.5 Vickers Hardness
NANA
Palladium Metal
121 3430
5.5 Speed of Sound
NA2,740.00 m/s
Thallium Metal
818 16200
5.6 Optical Properties
5.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
5.6.3 Reflectivity
NANA
Molybdenum Metal
58 97
5.7 Allotropes
5.7.1 α Allotropes
Not Available
Not Available
5.7.2 β Allotropes
Not Available
Not Available
5.7.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
Ac
Ga
6.2 Isotopes
6.2.1 Known Isotopes
2924
Tennessine Metal
0 38
6.3 Electronegativity
6.3.1 Pauling Electronegativity
1.101.81
Francium Metal
0.7 2.54
6.3.3 Sanderson Electronegativity
NA2.42
Cesium Metal
0.22 2.56
6.3.6 Allred Rochow Electronegativity
1.001.82
Cesium Metal
0.86 1.82
6.3.8 Mulliken-Jaffe Electronegativity
NA2.01
Cesium Metal
0.62 2.48
6.3.10 Allen Electronegativity
NA1.76
Cesium Metal
0.659 2.7
6.5 Electropositivity
6.5.1 Pauling Electropositivity
2.902.19
Gold Metal
1.46 3.3
6.7 Ionization Energies
6.7.1 1st Energy Level
499.00 kJ/mol578.80 kJ/mol
Cesium Metal
375.7 26130
6.8.1 2nd Energy Level
1,170.00 kJ/mol1,979.30 kJ/mol
Ruthenium Metal
710.2162 28750
7.1.1 3rd Energy Level
1,900.00 kJ/mol2,963.00 kJ/mol
Osmium Metal
1600 34230
7.4.3 4th Energy Level
4,700.00 kJ/mol6,180.00 kJ/mol
Thorium Metal
2780 37066
7.4.5 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
7.4.6 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
7.5.2 7th Energy level
NANA
Bohrium Metal
7226.8 114300
7.5.4 8th Energy Level
NANA
Hassium Metal
8857.4 125300
7.5.6 9th Energy Level
NANA
Yttrium Metal
14110 134700
7.6.1 10th Energy Level
NANA
Strontium Metal
17100 144300
7.7.1 11th Energy Level
NANA
Yttrium Metal
19900 169988
7.7.2 12th Energy Level
NANA
Molybdenum Metal
22219 189368
7.9.1 13th Energy Level
NANA
Molybdenum Metal
26930 76015
7.10.1 14th Energy Level
NANA
Molybdenum Metal
29196 86450
8.1.2 15th Energy Level
NANA
Manganese Metal
41987 97510
8.1.3 16th Energy Level
NANA
Iron Metal
47206 109480
8.1.5 17th Energy Level
NANA
Cobalt Metal
52737 122200
8.2.1 18th Energy Level
NANA
Nickel Metal
58570 134810
8.3.1 19th Energy Level
NANA
Copper Metal
64702 148700
8.4.2 20th Energy Level
NANA
Molybdenum Metal
80400 171200
8.4.3 21st Energy Level
NANA
Molybdenum Metal
87000 179100
8.4.5 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
8.5.2 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
8.5.3 24th Energy Level
NANA
Molybdenum Metal
104400 195200
8.5.5 25th Energy Level
NANA
Molybdenum Metal
121900 121900
8.5.6 26th Energy Level
NANA
Molybdenum Metal
127700 127700
8.5.8 27th Energy Level
NANA
Molybdenum Metal
133800 133800
8.5.9 28th Energy Level
NANA
Molybdenum Metal
139800 139800
8.6.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
8.6.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
9.2 Electrochemical Equivalent
2.82 g/amp-hr0.87 g/amp-hr
Beryllium Metal
0.16812 8.3209
9.3 Electron Work Function
NA4.20 eV
Cesium Metal
2.14 5.65
9.5 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes
10 Atomic
10.1 Atomic Number
8931
Lithium Metal
3 117
10.2 Electron Configuration
[Rn] 6d1 7s2
[Ar] 3d10 4s2 4p1
10.3 Crystal Structure
Face Centered Cubic (FCC)
Orthorhombic (ORTH)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
8931
Lithium Metal
3 117
10.4.3 Number of Neutrons
13839
Lithium Metal
4 184
11.1.1 Number of Electrons
8931
Lithium Metal
3 117
11.3 Radius of an Atom
11.3.1 Atomic Radius
195.00 pm135.00 pm
Beryllium Metal
112 265
11.4.1 Covalent Radius
NA122.00 pm
Beryllium Metal
96 260
11.5.1 Van der Waals Radius
NA187.00 pm
Zinc Metal
139 348
11.6 Atomic Weight
227.00 amu69.72 amu
Lithium Metal
6.94 294
11.8 Atomic Volume
22.54 cm3/mol11.80 cm3/mol
Manganese Metal
1.39 71.07
11.9 Adjacent Atomic Numbers
11.9.1 Previous Element
11.9.2 Next Element
11.10 Valence Electron Potential
38.60 (-eV)69.70 (-eV)
Francium Metal
8 392.42
11.12 Lattice Constant
567.00 pm451.97 pm
Beryllium Metal
228.58 891.25
11.13 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
11.14 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
10.00 g/cm35.91 g/cm3
Lithium Metal
0.534 40.7
12.1.3 Density When Liquid (at m.p.)
NA6.10 g/cm3
Lithium Metal
0.512 20
12.3 Tensile Strength
NANA
Indium Metal
2.5 11000
12.4 Viscosity
NANA
Mercury Metal
0.001526 0.001526
12.5 Vapor Pressure
12.5.1 Vapor Pressure at 1000 K
NA0.00 (Pa)
Cerium Metal
2.47E-11 121
12.5.2 Vapor Pressure at 2000 K
NANA
Tungsten Metal
2.62E-10 774
12.6 Elasticity properties
12.6.1 Shear Modulus
NANA
Potassium Metal
1.3 222
12.6.2 Bulk Modulus
NANA
Cesium Metal
1.6 462
12.6.3 Young's Modulus
NA9.80 GPa
Cesium Metal
1.7 528
12.7 Poisson Ratio
NA0.47
Beryllium Metal
0.032 0.47
12.8 Other Mechanical Properties
NA
NA
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
10.075.91
Lithium Metal
0.53 4500
13.1.2 Magnetic Ordering
Paramagnetic
Diamagnetic
13.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
13.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
13.2 Electrical Properties
13.2.1 Electrical Property
Unknown
Semiconductor
13.2.2 Resistivity
NA270.00 nΩ·m
Thallium Metal
0.18 961
13.2.3 Electrical Conductivity
NA0.07 106/cm Ω
Plutonium Metal
0.00666 0.63
13.2.4 Electron Affinity
NA28.90 kJ/mol
Mercury Metal
0 222.8
14 Thermal
14.1 Specific Heat
0.12 J/(kg K)0.37 J/(kg K)
Americium Metal
0.11 3.6
14.2 Molar Heat Capacity
27.20 J/mol·K25.86 J/mol·K
Beryllium Metal
16.443 62.7
14.3 Thermal Conductivity
12.00 W/m·K40.60 W/m·K
Neptunium Metal
6.3 429
14.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
14.5 Thermal Expansion
NA18.00 µm/(m·K)
Tungsten Metal
4.5 97
14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
NA256.10 kJ/mol
Zinc Metal
7.32 799.1
14.6.2 Enthalpy of Fusion
NA5.59 kJ/mol
Cesium Metal
2.1 35.23
14.6.3 Enthalpy of Atomization
301.00 kJ/mol276.10 kJ/mol
Mercury Metal
61.5 837
14.7 Standard Molar Entropy
56.50 J/mol.K40.80 J/mol.K
Beryllium Metal
9.5 198.1