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Lawrencium
Lawrencium

Actinium
Actinium



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Lawrencium
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Actinium

Lawrencium Actinium Comparison

1 Periodic Table
1.1 Symbol
Lr
Ac
1.2 Group Number
NANA
Gadolinium Metal
0 17
1.4 Period Number
77
Lithium Metal
2 7
2.3 Block
d block
f block
2.4 Element Family
Actinide
Actinide
2.5 CAS Number
225371957440348
Aluminium Metal
7429905 54386242
2.6 Space Group Name
Not Available
Fm_ 3m
2.7 Space Group Number
NA225.00
Plutonium Metal
11 229
3 Facts
3.1 Interesting Facts
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
Not Available
3.2 Sources
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining
Obtained by Treating Radium with Neutrons, Ores of metals
3.3 History
3.3.1 Who Discovered
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research
Friedrich Oskar Giesel
3.3.2 Discovery
In 1961–1971
In 1902
3.4 Abundance
3.4.1 Abundance In Universe
NANA
Thallium Metal
5E-09 0.11
3.4.3 Abundance In Sun
~-9999 %~-9999 %
Beryllium Metal
1E-08 0.1
3.4.5 Abundance In Meteorites
NANA
Gold Metal
1.7E-07 22
3.4.7 Abundance In Earth's Crust
NANA
Radium Metal
9.9E-12 8.1
3.5.2 Abundance In Oceans
NANA
Protactinium Metal
2E-23 1.1
3.6.2 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Currently known uses of Lawrencium metal are limited to research purpose only.
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
4.1.1 Industrial Uses
NA
NA
4.1.2 Medical Uses
NA
NA
4.1.4 Other Uses
NA
Alloys, Nuclear Research, Research Purposes
4.2 Biological Properties
4.2.1 Toxicity
Unknown
Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
4.2.5 In Bone
0.00 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
5 Physical
5.1 Melting Point
1,627.00 °C1,227.00 °C
Francium Metal
27 3410
5.2 Boiling Point
NA3,200.00 °C
Flerovium Metal
147 5660
5.3 Appearance
5.3.1 Physical State
Solid
Solid
5.3.2 Color
Silver
Silvery White
5.3.3 Luster
Unknown Luster
NA
5.4 Hardness
5.4.1 Mohs Hardness
NANA
Cesium Metal
0.2 8.5
5.4.3 Brinell Hardness
NANA
Cesium Metal
0.14 3490
5.4.6 Vickers Hardness
NANA
Palladium Metal
121 3430
5.5 Speed of Sound
NANA
Thallium Metal
818 16200
5.6 Optical Properties
5.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
5.6.2 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
Lr
Ac
6.2 Isotopes
6.2.1 Known Isotopes
1029
Tennessine Metal
0 38
6.3 Electronegativity
6.3.1 Pauling Electronegativity
NA1.10
Francium Metal
0.7 2.54
6.3.3 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
6.3.5 Allred Rochow Electronegativity
NA1.00
Cesium Metal
0.86 1.82
6.3.7 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
6.3.10 Allen Electronegativity
NANA
Cesium Metal
0.659 2.7
6.4 Electropositivity
6.4.1 Pauling Electropositivity
NA2.90
Gold Metal
1.46 3.3
6.5 Ionization Energies
6.5.1 1st Energy Level
470.00 kJ/mol499.00 kJ/mol
Cesium Metal
375.7 26130
6.5.4 2nd Energy Level
1,428.00 kJ/mol1,170.00 kJ/mol
Ruthenium Metal
710.2162 28750
6.5.6 3rd Energy Level
2,228.00 kJ/mol1,900.00 kJ/mol
Osmium Metal
1600 34230
6.5.8 4th Energy Level
4,910.00 kJ/mol4,700.00 kJ/mol
Thorium Metal
2780 37066
6.5.11 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
6.5.13 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
6.5.15 7th Energy level
NANA
Bohrium Metal
7226.8 114300
6.5.17 8th Energy Level
NANA
Hassium Metal
8857.4 125300
6.5.20 9th Energy Level
NANA
Yttrium Metal
14110 134700
6.6.1 10th Energy Level
NANA
Strontium Metal
17100 144300
6.7.1 11th Energy Level
NANA
Yttrium Metal
19900 169988
6.7.2 12th Energy Level
NANA
Molybdenum Metal
22219 189368
7.1.1 13th Energy Level
NANA
Molybdenum Metal
26930 76015
7.4.2 14th Energy Level
NANA
Molybdenum Metal
29196 86450
7.4.4 15th Energy Level
NANA
Manganese Metal
41987 97510
7.4.5 16th Energy Level
NANA
Iron Metal
47206 109480
7.4.7 17th Energy Level
NANA
Cobalt Metal
52737 122200
7.4.8 18th Energy Level
NANA
Nickel Metal
58570 134810
7.5.2 19th Energy Level
NANA
Copper Metal
64702 148700
7.5.5 20th Energy Level
NANA
Molybdenum Metal
80400 171200
7.5.6 21st Energy Level
NANA
Molybdenum Metal
87000 179100
7.6.1 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
7.6.2 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
7.7.1 24th Energy Level
NANA
Molybdenum Metal
104400 195200
7.7.2 25th Energy Level
NANA
Molybdenum Metal
121900 121900
7.9.1 26th Energy Level
NANA
Molybdenum Metal
127700 127700
7.9.2 27th Energy Level
NANA
Molybdenum Metal
133800 133800
7.10.1 28th Energy Level
NANA
Molybdenum Metal
139800 139800
7.12.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
8.1.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
8.2 Electrochemical Equivalent
3.23 g/amp-hr2.82 g/amp-hr
Beryllium Metal
0.16812 8.3209
8.3 Electron Work Function
NANA
Cesium Metal
2.14 5.65
8.5 Other Chemical Properties
Ionization, Radioactive Isotopes
Ionization, Radioactive Isotopes, Radioactivity, Solubility
9 Atomic
9.1 Atomic Number
10389
Lithium Metal
3 117
9.4 Electron Configuration
[Rn] 5f14 7s2 7p1
[Rn] 6d1 7s2
9.5 Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
9.5.1 Crystal Lattice
9.6 Atom
9.6.1 Number of Protons
10389
Lithium Metal
3 117
9.6.3 Number of Neutrons
157138
Lithium Metal
4 184
9.7.2 Number of Electrons
10389
Lithium Metal
3 117
9.8 Radius of an Atom
9.8.1 Atomic Radius
NA195.00 pm
Beryllium Metal
112 265
9.8.3 Covalent Radius
NANA
Beryllium Metal
96 260
9.8.4 Van der Waals Radius
246.00 pmNA
Zinc Metal
139 348
9.10 Atomic Weight
266.00 amu227.00 amu
Lithium Metal
6.94 294
10.2 Atomic Volume
NA22.54 cm3/mol
Manganese Metal
1.39 71.07
10.3 Adjacent Atomic Numbers
10.3.1 Previous Element
10.3.2 Next Element
10.4 Valence Electron Potential
NA38.60 (-eV)
Francium Metal
8 392.42
10.6 Lattice Constant
NA567.00 pm
Beryllium Metal
228.58 891.25
10.7 Lattice Angles
NA
π/2, π/2, π/2
10.8 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
NA10.00 g/cm3
Lithium Metal
0.534 40.7
11.1.3 Density When Liquid (at m.p.)
NANA
Lithium Metal
0.512 20
12.2 Tensile Strength
NANA
Indium Metal
2.5 11000
12.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
12.5 Vapor Pressure
12.5.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
12.6.1 Vapor Pressure at 2000 K
NANA
Tungsten Metal
2.62E-10 774
12.8 Elasticity properties
12.8.1 Shear Modulus
NANA
Potassium Metal
1.3 222
12.9.1 Bulk Modulus
NANA
Cesium Metal
1.6 462
12.10.2 Young's Modulus
NANA
Cesium Metal
1.7 528
12.11 Poisson Ratio
0.32NA
Beryllium Metal
0.032 0.47
12.12 Other Mechanical Properties
Unknown
NA
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
NA10.07
Lithium Metal
0.53 4500
13.1.3 Magnetic Ordering
Unknown
Paramagnetic
13.1.4 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
13.1.5 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
13.3 Electrical Properties
13.3.1 Electrical Property
Unknown
Unknown
13.3.2 Resistivity
NANA
Thallium Metal
0.18 961
13.3.3 Electrical Conductivity
NANA
Plutonium Metal
0.00666 0.63
13.3.4 Electron Affinity
NANA
Mercury Metal
0 222.8
14 Thermal
14.1 Specific Heat
NA0.12 J/(kg K)
Americium Metal
0.11 3.6
14.2 Molar Heat Capacity
NA27.20 J/mol·K
Beryllium Metal
16.443 62.7
14.3 Thermal Conductivity
NA12.00 W/m·K
Neptunium Metal
6.3 429
14.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
14.5 Thermal Expansion
NANA
Tungsten Metal
4.5 97
14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
NANA
Zinc Metal
7.32 799.1
14.6.2 Enthalpy of Fusion
NANA
Cesium Metal
2.1 35.23
14.6.3 Enthalpy of Atomization
NA301.00 kJ/mol
Mercury Metal
61.5 837
14.7 Standard Molar Entropy
NA56.50 J/mol.K
Beryllium Metal
9.5 198.1