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Niobium vs Zirconium

Niobium
Zirconium
Zirconium vs Niobium


Periodic Table
Symbol
Nb   
Zr   
Group Number
5   
13
4   
14
Period Number
5   
5   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440031   
99+
7440677   
23
Space Group Name
Im_ 3m   
P63/mmc   
Space Group Number
229.00   
1
194.00   
5
Facts
Interesting Facts
  • Niobium metal was used to get called Columbium in past.
  • Niobium metal found freely in nature (abundance).
  
  • Zirconium metal can resist to weak acids.
  • Zirconium metal reacts with oxygen and nitrogen in the atmosphere.
  
Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Charles Hatchett   
Martin Heinrich Klaproth   
Discovery
In 1801   
In 1789   
Abundance
  
  
Abundance In Universe
2 * 10-7 %   
22
5 * 10-6 %   
13
Abundance In Sun
~0.0000004 %   
23
~0.000004 %   
16
Abundance In Meteorites
0.00 %   
35
0.00 %   
17
Abundance In Earth's Crust
0.00 %   
25
0.01 %   
14
Abundance In Oceans
0.00 %   
34
0.00 %   
23
Abundance In Humans
Not Available   
0.00 %   
15
Uses
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.
  
  • As this metal does not absorb neutrons; It is used in nuclear power stations.
  • Its oxide is used in ultra strong ceramics. It is also used in manufacturing Crucibles.
  
Industrial Uses
Aerospace Industry, Ammunition Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Ammunition Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys, Nuclear Research, Research Purposes   
Biological Properties
  
  
Toxicity
Low Toxic   
NA   
Present in Human Body
Yes   
Yes   
In Blood
0.01 Blood/mg dm-3   
25
0.01 Blood/mg dm-3   
21
In Bone
0.07 p.p.m.   
25
0.10 p.p.m.   
23
Physical Properties
Melting Point
2,468.00 °C   
6
1,852.00 °C   
15
Boiling Point
2,468.00 °C   
99+
4,377.00 °C   
11
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silvery White   
Luster
Metallic   
Lustrous   
Hardness
  
  
Mohs Hardness
6.00   
6
5.00   
8
Brinell Hardness
735.00 MPa   
14
638.00 MPa   
19
Vickers Hardness
870.00 MPa   
12
820.00 MPa   
15
Speed of Sound
3,480.00 m/s   
21
3,800.00 m/s   
20
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Nb   
Zr   
Isotopes
  
  
Known Isotopes
17   
22
24   
15
Electronegativity
  
  
Pauling Electronegativity
1.60   
23
1.33   
30
Sanderson Electronegativity
1.42   
16
0.90   
25
Allred Rochow Electronegativity
1.23   
25
1.22   
26
Allen Electronegativity
1.41   
31
1.32   
34
Electropositivity
  
  
Pauling Electropositivity
2.40   
31
2.67   
24
Ionization Energies
  
  
1st Energy Level
652.10 kJ/mol   
99+
640.10 kJ/mol   
99+
2nd Energy Level
1,380.00 kJ/mol   
99+
1,270.00 kJ/mol   
99+
3rd Energy Level
2,416.00 kJ/mol   
99+
2,218.00 kJ/mol   
99+
4th Energy Level
3,700.00 kJ/mol   
99+
3,313.00 kJ/mol   
99+
5th Energy Level
4,877.00 kJ/mol   
36
7,752.00 kJ/mol   
10
6th Energy Level
9,847.00 kJ/mol   
11
9,500.00 kJ/mol   
15
7th Energy level
12,100.00 kJ/mol   
14
Not Available   
Electrochemical Equivalent
0.69 g/amp-hr   
99+
0.85 g/amp-hr   
99+
Electron Work Function
4.30 eV   
18
4.05 eV   
26
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
41   
99+
40   
99+
Electron Configuration
[Kr] 4d4 5s1   
[Kr] 4d2 5s2   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Zirconium.jpg#100   
Atom
  
  
Number of Protons
41   
99+
40   
99+
Number of Neutrons
52   
99+
51   
99+
Number of Electrons
41   
99+
40   
99+
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
160.00 pm   
27
Covalent Radius
164.00 pm   
28
175.00 pm   
23
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
92.91 amu   
99+
91.22 amu   
99+
Atomic Volume
10.87 cm3/mol   
99+
14.10 cm3/mol   
36
Adjacent Atomic Numbers
  
  
Previous Element
Zirconium
  
Yttrium
  
Next Element
Molybdenum
  
Niobium
  
Valence Electron Potential
104.00 (-eV)   
8
80.00 (-eV)   
18
Lattice Constant
330.04 pm   
99+
323.20 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.59   
8
Mechanical Properties
Density
  
  
Density At Room Temperature
8.57 g/cm3   
99+
6.52 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
5.80 g/cm3   
99+
Tensile Strength
330.00 MPa   
12
330.00 MPa   
12
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.00 (Pa)   
27
0.00 (Pa)   
21
Elasticity properties
  
  
Shear Modulus
38.00 GPa   
19
33.00 GPa   
20
Bulk Modulus
170.00 GPa   
10
91.10 GPa   
17
Young's Modulus
105.00 GPa   
20
88.00 GPa   
22
Poisson Ratio
0.40   
4
0.34   
10
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.57   
37
6.51   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
152.00 nΩ·m   
23
421.00 nΩ·m   
11
Electrical Conductivity
0.07 106/cm Ω   
28
0.02 106/cm Ω   
99+
Electron Affinity
86.10 kJ/mol   
12
41.10 kJ/mol   
27
Thermal Properties
Specific Heat
0.26 J/(kg K)   
20
0.27 J/(kg K)   
19
Molar Heat Capacity
24.60 J/mol·K   
99+
25.36 J/mol·K   
99+
Thermal Conductivity
53.70 W/m·K   
29
22.60 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
7.30 µm/(m·K)   
99+
5.70 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
696.60 kJ/mol   
4
581.60 kJ/mol   
9
Enthalpy of Fusion
27.20 kJ/mol   
6
20.90 kJ/mol   
11
Enthalpy of Atomization
745.00 kJ/mol   
4
598.00 kJ/mol   
10
Standard Molar Entropy
36.40 J/mol.K   
99+
39.00 J/mol.K   
39
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