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Niobium
Niobium

Roentgenium
Roentgenium



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Niobium
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Roentgenium

Niobium Roentgenium Comparison

1 Periodic Table
1.1 Symbol
Nb
Rg
1.2 Group Number
511
Gadolinium Metal
0 17
1.3 Period Number
57
Lithium Metal
2 7
1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Unknown
1.6 CAS Number
744003154386242
Aluminium Metal
7429905 54386242
1.7 Space Group Name
Im_ 3m
Not Available
1.8 Space Group Number
229.00194.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Niobium metal was used to get called Columbium in past.
  • Niobium metal found freely in nature (abundance).
Not Available
2.2 Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
Synthetically Produced
2.3 History
2.3.1 Who Discovered
Charles Hatchett
Gesellschaft für Schwerionenforschung
2.3.2 Discovery
In 1801
In 1994
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %NA
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000004 %~-9999 %
Beryllium Metal
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %NA
Gold Metal
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %NA
Radium Metal
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Niobium alloys are used in jet engines and rockets and spacecraft, beams and girders for buildings and oil and gas pipelines.
  • It is used superconducting magnets in particles accelerators, NMR and MRI equipment.
  • Currently known uses of Roentgenium metal are limited to research purpose only.
3.1.1 Industrial Uses
Aerospace Industry, Ammunition Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Low Toxic
Unknown
3.2.2 Present in Human Body
3.2.3 In Blood
0.01 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
3.2.4 In Bone
0.07 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
2,468.00 °CNA
Francium Metal
27 3410
4.2 Boiling Point
2,468.00 °CNA
Flerovium Metal
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Gray
Silver
4.3.3 Luster
Metallic
Unknown Luster
4.4 Hardness
4.4.1 Mohs Hardness
6.00NA
Cesium Metal
0.2 8.5
4.4.2 Brinell Hardness
735.00 MPaNA
Cesium Metal
0.14 3490
4.4.3 Vickers Hardness
870.00 MPaNA
Palladium Metal
121 3430
4.5 Speed of Sound
3,480.00 m/sNA
Thallium Metal
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum Metal
58 97
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Nb
Rg
5.2 Isotopes
5.2.1 Known Isotopes
171
Tennessine Metal
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.60NA
Francium Metal
0.7 2.54
5.3.2 Sanderson Electronegativity
1.42NA
Cesium Metal
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.23NA
Cesium Metal
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
5.3.5 Allen Electronegativity
1.41NA
Cesium Metal
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.40NA
Gold Metal
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
652.10 kJ/mol1,022.70 kJ/mol
Cesium Metal
375.7 26130
5.5.2 2nd Energy Level
1,380.00 kJ/mol2,074.40 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.3 3rd Energy Level
2,416.00 kJ/mol3,077.90 kJ/mol
Osmium Metal
1600 34230
5.5.4 4th Energy Level
3,700.00 kJ/mol4,052.40 kJ/mol
Thorium Metal
2780 37066
5.5.5 5th Energy Level
4,877.00 kJ/mol5,306.70 kJ/mol
Dubnium Metal
4305.2 97510
5.5.6 6th Energy Level
9,847.00 kJ/molNA
Seaborgium Metal
5715.8 105800
5.5.7 7th Energy level
12,100.00 kJ/molNA
Bohrium Metal
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium Metal
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium Metal
14110 134700
5.5.10 10th Energy Level
NANA
Strontium Metal
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium Metal
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum Metal
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum Metal
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum Metal
29196 86450
5.5.15 15th Energy Level
NANA
Manganese Metal
41987 97510
5.5.16 16th Energy Level
NANA
Iron Metal
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt Metal
52737 122200
5.5.18 18th Energy Level
NANA
Nickel Metal
58570 134810
5.5.19 19th Energy Level
NANA
Copper Metal
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum Metal
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum Metal
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum Metal
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum Metal
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum Metal
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum Metal
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum Metal
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum Metal
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum Metal
154500 154500
5.6 Electrochemical Equivalent
0.69 g/amp-hrNA
Beryllium Metal
0.16812 8.3209
5.7 Electron Work Function
4.30 eVNA
Cesium Metal
2.14 5.65
5.8 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
NA
6 Atomic
6.1 Atomic Number
41111
Lithium Metal
3 117
6.2 Electron Configuration
[Kr] 4d4 5s1
[Rn] 5f14 6d9 7s2
6.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
41111
Lithium Metal
3 117
6.4.2 Number of Neutrons
52161
Lithium Metal
4 184
6.4.3 Number of Electrons
41111
Lithium Metal
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
146.00 pmNA
Beryllium Metal
112 265
6.5.2 Covalent Radius
164.00 pmNA
Beryllium Metal
96 260
6.5.3 Van der Waals Radius
200.00 pmNA
Zinc Metal
139 348
6.6 Atomic Weight
92.91 amu281.00 amu
Lithium Metal
6.94 294
6.7 Atomic Volume
10.87 cm3/molNA
Manganese Metal
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
104.00 (-eV)NA
Francium Metal
8 392.42
6.10 Lattice Constant
330.04 pmNA
Beryllium Metal
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
NA
6.12 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
8.57 g/cm328.70 g/cm3
Lithium Metal
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
NANA
Lithium Metal
0.512 20
7.2 Tensile Strength
330.00 MPaNA
Indium Metal
2.5 11000
7.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
Cerium Metal
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
0.00 (Pa)NA
Tungsten Metal
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
38.00 GPaNA
Potassium Metal
1.3 222
7.5.2 Bulk Modulus
170.00 GPaNA
Cesium Metal
1.6 462
7.5.3 Young's Modulus
105.00 GPaNA
Cesium Metal
1.7 528
7.6 Poisson Ratio
0.40NA
Beryllium Metal
0.032 0.47
7.7 Other Mechanical Properties
Ductile, Malleable
Unknown
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.57NA
Lithium Metal
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Unknown
8.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Unknown
8.2.2 Resistivity
152.00 nΩ·mNA
Thallium Metal
0.18 961
8.2.3 Electrical Conductivity
0.07 106/cm ΩNA
Plutonium Metal
0.00666 0.63
8.2.4 Electron Affinity
86.10 kJ/molNA
Mercury Metal
0 222.8
9 Thermal
9.1 Specific Heat
0.26 J/(kg K)NA
Americium Metal
0.11 3.6
9.2 Molar Heat Capacity
24.60 J/mol·KNA
Beryllium Metal
16.443 62.7
9.3 Thermal Conductivity
53.70 W/m·KNA
Neptunium Metal
6.3 429
9.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
9.5 Thermal Expansion
7.30 µm/(m·K)NA
Tungsten Metal
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
696.60 kJ/molNA
Zinc Metal
7.32 799.1
9.6.2 Enthalpy of Fusion
27.20 kJ/molNA
Cesium Metal
2.1 35.23
9.6.3 Enthalpy of Atomization
745.00 kJ/molNA
Mercury Metal
61.5 837
9.7 Standard Molar Entropy
36.40 J/mol.KNA
Beryllium Metal
9.5 198.1