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Lanthanum
Lanthanum

Neodymium
Neodymium



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Lanthanum
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Neodymium

Lanthanum Neodymium Comparison

1 Periodic Table
1.1 Symbol
La
Nd
1.2 Group Number
NA1
Gadolinium Metal
0 17
1.3 Period Number
66
Lithium Metal
2 7
1.5 Block
f block
f block
1.6 Element Family
Lanthanide
Lanthanide
1.7 CAS Number
74399107440008
Aluminium Metal
7429905 54386242
1.11 Space Group Name
P63/mmc
P63/mmc
1.12 Space Group Number
194.00194.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Lanthanum metal is highly malleable, ductile and sectile.
  • If exposed to air Lanthanum metal oxidizes rapidly.
  • Neodymium is not found free in nature, hence it is not a native metal.
  • Neodymium metal found in minerals like Monazite and Bastnaesite.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Carl Gustaf Mosander
Carl Auer von Welsbach
2.3.2 Discovery
In 1838
In 1885
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %1 * 10-6 %
Thallium Metal
5E-09 0.11
3.4.2 Abundance In Sun
~0.0000002 %~0.0000003 %
Beryllium Metal
1E-08 0.1
3.4.4 Abundance In Meteorites
0.00 %0.00 %
Gold Metal
1.7E-07 22
3.4.6 Abundance In Earth's Crust
0.00 %0.00 %
Radium Metal
9.9E-12 8.1
3.4.8 Abundance In Oceans
0.00 %0.00 %
Protactinium Metal
2E-23 1.1
3.4.10 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
2 Uses
2.1 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.
  • Neodymium-Iron-boron alloy is used to make permanent magnets.
  • It is used in microphones, Mp3 player, loudspeakers, mobile phones, etc.
2.1.1 Industrial Uses
Electrical Industry, Electronic Industry
Aerospace Industry, Electrical Industry, Electronic Industry
2.1.2 Medical Uses
NA
NA
2.1.3 Other Uses
Alloys, Mirror Manufacturing
Alloys
2.2 Biological Properties
2.2.1 Toxicity
Low Toxic
Non Toxic
2.2.2 Present in Human Body
2.2.3 In Blood
NANA
Plutonium Metal
0 1970
2.2.5 In Bone
0.08 p.p.m.NA
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
920.00 °C1,010.00 °C
Francium Metal
27 3410
4.6 Boiling Point
3,469.00 °C3,127.00 °C
Flerovium Metal
147 5660
4.9 Appearance
4.9.1 Physical State
Solid
Solid
4.9.2 Color
Silvery White
Silvery White
4.9.3 Luster
NA
Metallic
4.10 Hardness
4.10.1 Mohs Hardness
2.50NA
Cesium Metal
0.2 8.5
6.4.2 Brinell Hardness
350.00 MPa265.00 MPa
Cesium Metal
0.14 3490
6.5.2 Vickers Hardness
360.00 MPa345.00 MPa
Palladium Metal
121 3430
6.8 Speed of Sound
2,475.00 m/s2,330.00 m/s
Thallium Metal
818 16200
6.9 Optical Properties
6.9.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
6.9.3 Reflectivity
NANA
Molybdenum Metal
58 97
6.10 Allotropes
6.10.1 α Allotropes
Not Available
Not Available
6.10.2 β Allotropes
Not Available
Not Available
6.10.3 γ Allotropes
Not Available
Not Available
7 Chemical
7.1 Chemical Formula
La
Nd
7.2 Isotopes
7.2.1 Known Isotopes
3130
Tennessine Metal
0 38
7.4 Electronegativity
7.4.1 Pauling Electronegativity
1.101.14
Francium Metal
0.7 2.54
7.5.4 Sanderson Electronegativity
NANA
Cesium Metal
0.22 2.56
9.2.2 Allred Rochow Electronegativity
1.081.07
Cesium Metal
0.86 1.82
9.2.4 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
10.1.1 Allen Electronegativity
NANA
Cesium Metal
0.659 2.7
10.2 Electropositivity
10.2.1 Pauling Electropositivity
2.902.86
Gold Metal
1.46 3.3
10.4 Ionization Energies
10.4.1 1st Energy Level
538.10 kJ/mol533.10 kJ/mol
Cesium Metal
375.7 26130
10.6.2 2nd Energy Level
1,067.00 kJ/mol1,040.00 kJ/mol
Ruthenium Metal
710.2162 28750
10.6.4 3rd Energy Level
1,850.30 kJ/mol2,130.00 kJ/mol
Osmium Metal
1600 34230
10.7.2 4th Energy Level
4,819.00 kJ/mol3,900.00 kJ/mol
Thorium Metal
2780 37066
10.8.2 5th Energy Level
5,940.00 kJ/molNA
Dubnium Metal
4305.2 97510
10.8.5 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
10.9.2 7th Energy level
NANA
Bohrium Metal
7226.8 114300
10.9.3 8th Energy Level
NANA
Hassium Metal
8857.4 125300
10.10.2 9th Energy Level
NANA
Yttrium Metal
14110 134700
10.10.5 10th Energy Level
NANA
Strontium Metal
17100 144300
11.2.2 11th Energy Level
NANA
Yttrium Metal
19900 169988
11.2.4 12th Energy Level
NANA
Molybdenum Metal
22219 189368
11.3.3 13th Energy Level
NANA
Molybdenum Metal
26930 76015
11.3.6 14th Energy Level
NANA
Molybdenum Metal
29196 86450
11.3.8 15th Energy Level
NANA
Manganese Metal
41987 97510
11.3.11 16th Energy Level
NANA
Iron Metal
47206 109480
11.3.14 17th Energy Level
NANA
Cobalt Metal
52737 122200
11.3.16 18th Energy Level
NANA
Nickel Metal
58570 134810
11.3.18 19th Energy Level
NANA
Copper Metal
64702 148700
11.4.2 20th Energy Level
NANA
Molybdenum Metal
80400 171200
11.4.4 21st Energy Level
NANA
Molybdenum Metal
87000 179100
11.5.3 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
11.5.5 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
11.5.7 24th Energy Level
NANA
Molybdenum Metal
104400 195200
11.5.10 25th Energy Level
NANA
Molybdenum Metal
121900 121900
11.5.12 26th Energy Level
NANA
Molybdenum Metal
127700 127700
11.5.15 27th Energy Level
NANA
Molybdenum Metal
133800 133800
11.5.18 28th Energy Level
NANA
Molybdenum Metal
139800 139800
11.5.20 29th Energy Level
NANA
Molybdenum Metal
148100 148100
11.5.23 30th Energy Level
NANA
Molybdenum Metal
154500 154500
11.6 Electrochemical Equivalent
1.73 g/amp-hr1.79 g/amp-hr
Beryllium Metal
0.16812 8.3209
11.7 Electron Work Function
3.50 eV3.20 eV
Cesium Metal
2.14 5.65
11.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Corrosion, Flammable, Ionization
12 Atomic
12.1 Atomic Number
5760
Lithium Metal
3 117
12.2 Electron Configuration
[Xe] 5d2 6s2
[Xe] 4f4 6s2
12.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Double Hexagonal Close Packed (DHCP)
12.3.1 Crystal Lattice
12.4 Atom
12.4.1 Number of Protons
5760
Lithium Metal
3 117
12.5.2 Number of Neutrons
8284
Lithium Metal
4 184
12.6.2 Number of Electrons
5760
Lithium Metal
3 117
13.2 Radius of an Atom
13.2.1 Atomic Radius
187.00 pm181.00 pm
Beryllium Metal
112 265
13.5.3 Covalent Radius
207.00 pm201.00 pm
Beryllium Metal
96 260
13.5.5 Van der Waals Radius
240.00 pm229.00 pm
Zinc Metal
139 348
13.6 Atomic Weight
138.91 amu144.24 amu
Lithium Metal
6.94 294
13.7 Atomic Volume
20.73 cm3/mol20.60 cm3/mol
Manganese Metal
1.39 71.07
13.9 Adjacent Atomic Numbers
13.9.1 Previous Element
13.9.2 Next Element
13.10 Valence Electron Potential
40.71 (-eV)43.40 (-eV)
Francium Metal
8 392.42
13.11 Lattice Constant
377.20 pm365.80 pm
Beryllium Metal
228.58 891.25
13.13 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
13.14 Lattice C/A Ratio
1.621.61
Beryllium Metal
1.567 1.886
14 Mechanical
14.1 Density
14.1.1 Density At Room Temperature
6.16 g/cm37.01 g/cm3
Lithium Metal
0.534 40.7
14.3.1 Density When Liquid (at m.p.)
5.94 g/cm36.89 g/cm3
Lithium Metal
0.512 20
14.5 Tensile Strength
NANA
Indium Metal
2.5 11000
14.8 Viscosity
NANA
Mercury Metal
0.001526 0.001526
15.2 Vapor Pressure
15.2.1 Vapor Pressure at 1000 K
NA0.00 (Pa)
Cerium Metal
2.47E-11 121
15.2.3 Vapor Pressure at 2000 K
0.98 (Pa)101.00 (Pa)
Tungsten Metal
2.62E-10 774
15.3 Elasticity properties
15.3.1 Shear Modulus
14.30 GPa16.30 GPa
Potassium Metal
1.3 222
15.4.2 Bulk Modulus
27.90 GPa31.80 GPa
Cesium Metal
1.6 462
15.7.1 Young's Modulus
36.60 GPa41.40 GPa
Cesium Metal
1.7 528
15.8 Poisson Ratio
0.280.28
Beryllium Metal
0.032 0.47
15.11 Other Mechanical Properties
Ductile
NA
16 Magnetic
16.1 Magnetic Characteristics
16.1.1 Specific Gravity
6.177.00
Lithium Metal
0.53 4500
17.1.1 Magnetic Ordering
Paramagnetic
Paramagnetic
17.1.2 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
17.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
17.5 Electrical Properties
17.5.1 Electrical Property
Conductor
NA
17.5.2 Resistivity
615.00 nΩ·m643.00 nΩ·m
Thallium Metal
0.18 961
17.6.1 Electrical Conductivity
0.01 106/cm Ω0.02 106/cm Ω
Plutonium Metal
0.00666 0.63
18.1.2 Electron Affinity
48.00 kJ/mol50.00 kJ/mol
Mercury Metal
0 222.8
19 Thermal
19.1 Specific Heat
0.19 J/(kg K)0.19 J/(kg K)
Americium Metal
0.11 3.6
19.4 Molar Heat Capacity
27.11 J/mol·K27.45 J/mol·K
Beryllium Metal
16.443 62.7
19.5 Thermal Conductivity
13.40 W/m·K16.50 W/m·K
Neptunium Metal
6.3 429
19.6 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
20.2 Thermal Expansion
12.10 µm/(m·K)9.60 µm/(m·K)
Tungsten Metal
4.5 97
20.3 Enthalpy
20.3.1 Enthalpy of Vaporization
399.60 kJ/mol273.00 kJ/mol
Zinc Metal
7.32 799.1
20.6.1 Enthalpy of Fusion
6.20 kJ/mol7.14 kJ/mol
Cesium Metal
2.1 35.23
20.8.1 Enthalpy of Atomization
431.00 kJ/mol322.00 kJ/mol
Mercury Metal
61.5 837
20.12 Standard Molar Entropy
56.90 J/mol.K71.50 J/mol.K
Beryllium Metal
9.5 198.1