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Protactinium Vanadium Comparison

Protactinium
Vanadium
Vanadium Protactinium comparison


Periodic Table
Symbol
Pa  
V  
Group Number
3  
15
5  
13
Period Number
7  
4  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440133  
99+
7440622  
27
Space Group Name
I4/mmm  
Im_ 3m  
Space Group Number
139.00  
11
229.00  
2
Facts
Interesting Facts
  • Protactinium metal has 29 isotopes.
  • Isotopes of Protactinium-231 used in nuclear weapon.
  
  • Vanadium is a highly reactive metal, hence it is not found free in nature.
  • Vanadium can be found in almost 65 different types of minerals.
  
Sources
Found in Uranium Ores, Mining, Ores of metals  
Found As a By-product, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
William Crookes  
Andrés Manuel del Río  
Discovery
In 1900  
In 1801  
Abundance
  
  
Abundance In Universe
0.00 %  
17
0.00 %  
11
Abundance In Sun
0.00 %  
26
0.00 %  
13
Abundance In Meteorites
-  
0.01 %  
14
Abundance In Earth's Crust
0.00 %  
99+
0.02 %  
12
Abundance In Oceans
0.00 %  
99+
0.00 %  
14
Abundance In Humans
0.00 %  
24
0.00 %  
19
Uses
Uses & Benefits
  • Currently known uses of Protactinium metal are limited to research purpose only.
  
  • Its ally with steel is used very tough and hence it is used in armor plates, axles, piston rods, tools and crankshafts.
  • Its oxide is used as pigments for glass and ceramics.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
39
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
36
Physical
Melting Point
1,568.00 °C  
21
1,890.00 °C  
13
Boiling Point
4,027.00 °C  
12
3,380.00 °C  
21
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Blue-Silver Grey  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
5.00  
8
6.70  
4
Brinell Hardness
125.00 MPa  
99+
600.00 MPa  
24
Vickers Hardness
220.00 MPa  
99+
628.00 MPa  
25
Speed of Sound
12,400.00 m/s  
3
4,560.00 m/s  
22
Optical Properties
  
  
Refractive Index
1.60  
33
2.05  
13
Reflectivity
60.00 %  
23
61.00 %  
22
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Pa  
V  
Isotopes
  
  
Known Isotopes
27  
12
22  
17
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
1.63  
21
Sanderson Electronegativity
1.50  
18
1.39  
21
Allred Rochow Electronegativity
1.14  
29
1.45  
17
Mulliken-Jaffe Electronegativity
1.50  
26
1.63  
21
Allen Electronegativity
1.50  
32
1.53  
29
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
2.37  
34
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
99+
2nd Energy Level
1,128.00 kJ/mol  
99+
1,414.00 kJ/mol  
99+
3rd Energy Level
1,814.00 kJ/mol  
99+
2,830.00 kJ/mol  
36
4th Energy Level
2,991.00 kJ/mol  
99+
4,507.00 kJ/mol  
35
5th Energy Level
5,120.00 kJ/mol  
99+
6,298.70 kJ/mol  
38
6th Energy Level
5,680.00 kJ/mol  
99+
12,363.00 kJ/mol  
6
7th Energy level
5,680.00 kJ/mol  
99+
14,530.00 kJ/mol  
5
8th Energy Level
5,680.00 kJ/mol  
99+
16,730.00 kJ/mol  
7
9th Energy Level
5,120.00 kJ/mol  
99+
19,860.00 kJ/mol  
7
10th Energy Level
5,120.00 kJ/mol  
99+
22,240.00 kJ/mol  
12
11th Energy Level
5,680.00 kJ/mol  
99+
24,670.00 kJ/mol  
15
12th Energy Level
5,680.00 kJ/mol  
99+
29,730.00 kJ/mol  
34
13th Energy Level
5,680.00 kJ/mol  
99+
32,446.00 kJ/mol  
12
14th Energy Level
5,680.00 kJ/mol  
99+
86,450.00 kJ/mol  
1
15th Energy Level
56,800.00 kJ/mol  
99+
94,170.00 kJ/mol  
3
16th Energy Level
56,800.00 kJ/mol  
99+
102,300.00 kJ/mol  
3
17th Energy Level
568.50 kJ/mol  
99+
112,700.00 kJ/mol  
4
18th Energy Level
5,680.00 kJ/mol  
99+
121,600.00 kJ/mol  
5
19th Energy Level
568.30 kJ/mol  
99+
130,700.00 kJ/mol  
6
20th Energy Level
568.00 kJ/mol  
99+
143,400.00 kJ/mol  
8
21st Energy Level
568.00 kJ/mol  
99+
151,440.00 kJ/mol  
8
22nd Energy Level
568.00 kJ/mol  
99+
650.00 kJ/mol  
32
23rd Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
99+
24th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
34
25th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
36
26th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
35
27th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
36
28th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
99+
29th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
99+
30th Energy Level
568.00 kJ/mol  
99+
650.90 kJ/mol  
38
Electrochemical Equivalent
1.72 g/amp-hr  
99+
0.38 g/amp-hr  
99+
Electron Work Function
5.89 eV  
3
4.30 eV  
25
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
91  
27
23  
99+
Electron Configuration
[Rn] 5f2 6d1 7s2  
[Ar] 3d3 4s2  
Crystal Structure
Tetragonal (TETR)  
Body Centered Cubic (BCC)  
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
91  
27
23  
99+
Number of Neutrons
122  
22
28  
99+
Number of Electrons
91  
27
23  
99+
Radius of an Atom
  
  
Atomic Radius
163.00 pm  
27
134.00 pm  
99+
Covalent Radius
200.00 pm  
11
153.00 pm  
35
Van der Waals Radius
243.00 pm  
15
200.00 pm  
35
Atomic Weight
231.04 amu  
24
50.94 amu  
99+
Atomic Volume
15.00 cm3/mol  
99+
8.78 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Titanium
  
Next Element
Uranium
  
Chromium
  
Valence Electron Potential
92.00 (-eV)  
11
120.00 (-eV)  
6
Lattice Constant
392.50 pm  
26
303.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
36
1.70  
9
Mechanical
Density
  
  
Density At Room Temperature
15.37 g/cm3  
20
6.00 g/cm3  
99+
Density When Liquid (at m.p.)
15.37 g/cm3  
21
5.50 g/cm3  
99+
Tensile Strength
80.00 MPa  
29
800.00 MPa  
6
Viscosity
0.00  
25
0.00  
11
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
32
0.23 (Pa)  
16
Elasticity properties
  
  
Shear Modulus
16.00 GPa  
99+
47.00 GPa  
16
Bulk Modulus
47.00 GPa  
26
160.00 GPa  
11
Young's Modulus
47.00 GPa  
99+
128.00 GPa  
17
Poisson Ratio
0.23  
30
0.37  
7
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
15.37  
23
5.96  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
10
0.00 H/m  
15
Susceptibility
0.00  
21
0.00  
8
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
177.00 nΩ·m  
21
197.00 nΩ·m  
19
Electrical Conductivity
0.05 106/cm Ω  
39
0.05 106/cm Ω  
40
Electron Affinity
53.03 kJ/mol  
22
50.60 kJ/mol  
25
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.49 J/(kg K)  
10
Molar Heat Capacity
27.20 J/mol·K  
24
24.89 J/mol·K  
99+
Thermal Conductivity
47.00 W/m·K  
32
30.70 W/m·K  
40
Critical Temperature
1,841.00 K  
25
2,183.00 K  
15
Thermal Expansion
9.90 µm/(m·K)  
99+
8.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
481.00 kJ/mol  
17
458.60 kJ/mol  
19
Enthalpy of Fusion
12.34 kJ/mol  
34
17.57 kJ/mol  
14
Enthalpy of Atomization
481.90 kJ/mol  
19
514.60 kJ/mol  
17
Standard Molar Entropy
198.10 J/mol.K  
1
28.90 J/mol.K  
99+
Summary >>
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