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Lanthanum
Lanthanum

Actinium
Actinium



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Lanthanum
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Actinium

Lanthanum Actinium Comparison

1 Periodic Table
1.1 Symbol
La
Ac
1.2 Group Number
NANA
Gadolinium Metal
0 17
2.3 Period Number
67
Lithium Metal
2 7
2.5 Block
f block
f block
2.6 Element Family
Lanthanide
Actinide
2.7 CAS Number
74399107440348
Aluminium Metal
7429905 54386242
3.2 Space Group Name
P63/mmc
Fm_ 3m
3.3 Space Group Number
194.00225.00
Plutonium Metal
11 229
4 Facts
4.1 Interesting Facts
  • Lanthanum metal is highly malleable, ductile and sectile.
  • If exposed to air Lanthanum metal oxidizes rapidly.
Not Available
4.2 Sources
Found in Minerals, Mining, Ores of Minerals
Obtained by Treating Radium with Neutrons, Ores of metals
4.3 History
4.3.1 Who Discovered
Carl Gustaf Mosander
Friedrich Oskar Giesel
4.3.2 Discovery
In 1838
In 1902
4.4 Abundance
4.4.1 Abundance In Universe
2 * 10-7 %NA
Thallium Metal
5E-09 0.11
5.2.2 Abundance In Sun
~0.0000002 %~-9999 %
Beryllium Metal
1E-08 0.1
5.4.2 Abundance In Meteorites
0.00 %NA
Gold Metal
1.7E-07 22
7.1.3 Abundance In Earth's Crust
0.00 %NA
Radium Metal
9.9E-12 8.1
7.4.2 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
7.5.5 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
8 Uses
8.1 Uses & Benefits
  • It has no commercial uses, but its alloys are in high demand. Lanthanum and Nickel alloy is used for the hydrogen gas storage.
  • The best-known use for mischmetal alloy of Lanthanum is; as a ‘flints’ for cigarette lighters.
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
8.1.1 Industrial Uses
Electrical Industry, Electronic Industry
NA
8.1.2 Medical Uses
NA
NA
8.1.3 Other Uses
Alloys, Mirror Manufacturing
Alloys, Nuclear Research, Research Purposes
8.2 Biological Properties
8.2.1 Toxicity
Low Toxic
Toxic
8.2.2 Present in Human Body
8.2.3 In Blood
NA0.00 Blood/mg dm-3
Plutonium Metal
0 1970
8.4.2 In Bone
0.08 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
10 Physical
10.1 Melting Point
920.00 °C1,227.00 °C
Francium Metal
27 3410
11.2 Boiling Point
3,469.00 °C3,200.00 °C
Flerovium Metal
147 5660
12.5 Appearance
12.5.1 Physical State
Solid
Solid
12.5.2 Color
Silvery White
Silvery White
12.5.3 Luster
NA
NA
12.6 Hardness
12.6.1 Mohs Hardness
2.50NA
Cesium Metal
0.2 8.5
12.8.2 Brinell Hardness
350.00 MPaNA
Cesium Metal
0.14 3490
12.10.2 Vickers Hardness
360.00 MPaNA
Palladium Metal
121 3430
12.15 Speed of Sound
2,475.00 m/sNA
Thallium Metal
818 16200
12.16 Optical Properties
12.16.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
12.17.2 Reflectivity
NANA
Molybdenum Metal
58 97
12.18 Allotropes
12.18.1 α Allotropes
Not Available
Not Available
12.18.2 β Allotropes
Not Available
Not Available
12.18.3 γ Allotropes
Not Available
Not Available
13 Chemical
13.1 Chemical Formula
La
Ac
13.2 Isotopes
13.2.1 Known Isotopes
3129
Tennessine Metal
0 38
13.3 Electronegativity
13.3.2 Pauling Electronegativity
1.101.10
Francium Metal
0.7 2.54
13.3.4 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
13.3.7 Allred Rochow Electronegativity
1.081.00
Cesium Metal
0.86 1.82
13.3.10 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
13.3.14 Allen Electronegativity
NANA
Cesium Metal
0.659 2.7
13.4 Electropositivity
13.4.1 Pauling Electropositivity
2.902.90
Gold Metal
1.46 3.3
13.5 Ionization Energies
13.5.1 1st Energy Level
538.10 kJ/mol499.00 kJ/mol
Cesium Metal
375.7 26130
13.5.4 2nd Energy Level
1,067.00 kJ/mol1,170.00 kJ/mol
Ruthenium Metal
710.2162 28750
13.5.6 3rd Energy Level
1,850.30 kJ/mol1,900.00 kJ/mol
Osmium Metal
1600 34230
13.5.8 4th Energy Level
4,819.00 kJ/mol4,700.00 kJ/mol
Thorium Metal
2780 37066
1.2.2 5th Energy Level
5,940.00 kJ/molNA
Dubnium Metal
4305.2 97510
1.3.2 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
1.6.3 7th Energy level
NANA
Bohrium Metal
7226.8 114300
1.8.1 8th Energy Level
NANA
Hassium Metal
8857.4 125300
1.8.4 9th Energy Level
NANA
Yttrium Metal
14110 134700
2.4.3 10th Energy Level
NANA
Strontium Metal
17100 144300
2.4.7 11th Energy Level
NANA
Yttrium Metal
19900 169988
2.4.11 12th Energy Level
NANA
Molybdenum Metal
22219 189368
2.4.16 13th Energy Level
NANA
Molybdenum Metal
26930 76015
2.4.21 14th Energy Level
NANA
Molybdenum Metal
29196 86450
2.4.26 15th Energy Level
NANA
Manganese Metal
41987 97510
2.4.30 16th Energy Level
NANA
Iron Metal
47206 109480
3.2.4 17th Energy Level
NANA
Cobalt Metal
52737 122200
3.2.8 18th Energy Level
NANA
Nickel Metal
58570 134810
3.2.13 19th Energy Level
NANA
Copper Metal
64702 148700
4.2.2 20th Energy Level
NANA
Molybdenum Metal
80400 171200
4.2.4 21st Energy Level
NANA
Molybdenum Metal
87000 179100
4.5.1 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
5.1.1 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
5.4.1 24th Energy Level
NANA
Molybdenum Metal
104400 195200
5.7.3 25th Energy Level
NANA
Molybdenum Metal
121900 121900
6.1.1 26th Energy Level
NANA
Molybdenum Metal
127700 127700
6.1.4 27th Energy Level
NANA
Molybdenum Metal
133800 133800
6.4.2 28th Energy Level
NANA
Molybdenum Metal
139800 139800
1.3.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
1.3.3 30th Energy Level
NANA
Molybdenum Metal
154500 154500
1.6 Electrochemical Equivalent
1.73 g/amp-hr2.82 g/amp-hr
Beryllium Metal
0.16812 8.3209
1.9 Electron Work Function
3.50 eVNA
Cesium Metal
2.14 5.65
2.4 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
3 Atomic
3.1 Atomic Number
5789
Lithium Metal
3 117
3.6 Electron Configuration
[Xe] 5d2 6s2
[Rn] 6d1 7s2
3.7 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Face Centered Cubic (FCC)
3.7.1 Crystal Lattice
3.8 Atom
3.8.1 Number of Protons
5789
Lithium Metal
3 117
4.5.1 Number of Neutrons
82138
Lithium Metal
4 184
4.8.1 Number of Electrons
5789
Lithium Metal
3 117
4.12 Radius of an Atom
4.12.1 Atomic Radius
187.00 pm195.00 pm
Beryllium Metal
112 265
5.2.2 Covalent Radius
207.00 pmNA
Beryllium Metal
96 260
5.4.2 Van der Waals Radius
240.00 pmNA
Zinc Metal
139 348
5.7 Atomic Weight
138.91 amu227.00 amu
Lithium Metal
6.94 294
6.2 Atomic Volume
20.73 cm3/mol22.54 cm3/mol
Manganese Metal
1.39 71.07
7.3 Adjacent Atomic Numbers
7.3.1 Previous Element
7.3.2 Next Element
7.4 Valence Electron Potential
40.71 (-eV)38.60 (-eV)
Francium Metal
8 392.42
7.6 Lattice Constant
377.20 pm567.00 pm
Beryllium Metal
228.58 891.25
7.9 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
8.2 Lattice C/A Ratio
1.62NA
Beryllium Metal
1.567 1.886
9 Mechanical
9.1 Density
9.1.1 Density At Room Temperature
6.16 g/cm310.00 g/cm3
Lithium Metal
0.534 40.7
9.2.3 Density When Liquid (at m.p.)
5.94 g/cm3NA
Lithium Metal
0.512 20
9.6 Tensile Strength
NANA
Indium Metal
2.5 11000
9.8 Viscosity
NANA
Mercury Metal
0.001526 0.001526
10.2 Vapor Pressure
10.2.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
10.2.7 Vapor Pressure at 2000 K
0.98 (Pa)NA
Tungsten Metal
2.62E-10 774
10.5 Elasticity properties
10.5.1 Shear Modulus
14.30 GPaNA
Potassium Metal
1.3 222
11.1.3 Bulk Modulus
27.90 GPaNA
Cesium Metal
1.6 462
11.2.5 Young's Modulus
36.60 GPaNA
Cesium Metal
1.7 528
13.2 Poisson Ratio
0.28NA
Beryllium Metal
0.032 0.47
13.4 Other Mechanical Properties
Ductile
NA
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
6.1710.07
Lithium Metal
0.53 4500
14.2.3 Magnetic Ordering
Paramagnetic
Paramagnetic
14.2.4 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
14.3.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
15.2 Electrical Properties
15.2.1 Electrical Property
Conductor
Unknown
15.2.2 Resistivity
615.00 nΩ·mNA
Thallium Metal
0.18 961
15.4.1 Electrical Conductivity
0.01 106/cm ΩNA
Plutonium Metal
0.00666 0.63
15.6.2 Electron Affinity
48.00 kJ/molNA
Mercury Metal
0 222.8
16 Thermal
16.1 Specific Heat
0.19 J/(kg K)0.12 J/(kg K)
Americium Metal
0.11 3.6
16.4 Molar Heat Capacity
27.11 J/mol·K27.20 J/mol·K
Beryllium Metal
16.443 62.7
16.8 Thermal Conductivity
13.40 W/m·K12.00 W/m·K
Neptunium Metal
6.3 429
16.10 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
16.11 Thermal Expansion
12.10 µm/(m·K)NA
Tungsten Metal
4.5 97
16.12 Enthalpy
16.12.1 Enthalpy of Vaporization
399.60 kJ/molNA
Zinc Metal
7.32 799.1
16.14.1 Enthalpy of Fusion
6.20 kJ/molNA
Cesium Metal
2.1 35.23
16.15.2 Enthalpy of Atomization
431.00 kJ/mol301.00 kJ/mol
Mercury Metal
61.5 837
17.2 Standard Molar Entropy
56.90 J/mol.K56.50 J/mol.K
Beryllium Metal
9.5 198.1