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Radium vs Vanadium

Radium
Vanadium
Vanadium vs Radium


Periodic Table
Symbol
Ra   
V   
Group Number
2   
16
5   
13
Period Number
7   
4   
Block
s block   
d block   
Element Family
Alkaline Earth   
Transition Metal   
CAS Number
7440144   
99+
7440622   
27
Space Group Name
Im_ 3m   
Im_ 3m   
Space Group Number
229.00   
1
229.00   
1
Facts
Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
  • 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
Mining, Ores of metals   
Found As a By-product, Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Not Available   
Andrés Manuel del Río   
Discovery
In 1898   
In 1801   
Abundance
  
  
Abundance In Universe
Not Available   
1 * 10-4 %   
10
Abundance In Sun
~-9999 %   
~0.00004 %   
13
Abundance In Meteorites
Not Available   
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 %   
20
0.00 %   
16
Uses
Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
  • 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
NA   
Aerospace Industry, Automobile Industry, Chemical Industry   
Medical Uses
Pharmaceutical Industry   
NA   
Other Uses
NA   
Alloys   
Biological Properties
  
  
Toxicity
Highly Toxic   
Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
0.00 Blood/mg dm-3   
36
In Bone
Not Available   
0.00 p.p.m.   
31
Physical Properties
Melting Point
700.00 °C   
99+
1,890.00 °C   
13
Boiling Point
1,737.00 °C   
99+
3,380.00 °C   
20
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Blue-Silver Grey   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
6.70   
4
Brinell Hardness
Not Available   
600.00 MPa   
20
Vickers Hardness
Not Available   
628.00 MPa   
17
Speed of Sound
Not Available   
4,560.00 m/s   
17
Optical Properties
  
  
Reflectivity
Not Available   
61.00 %   
14
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
Ra   
V   
Isotopes
  
  
Known Isotopes
33   
6
22   
17
Electronegativity
  
  
Pauling Electronegativity
0.90   
99+
1.63   
20
Sanderson Electronegativity
Not Available   
1.39   
17
Allred Rochow Electronegativity
0.97   
38
1.45   
16
Mulliken-Jaffe Electronegativity
0.92   
20
Not Available   
Allen Electronegativity
0.89   
99+
1.53   
26
Electropositivity
  
  
Pauling Electropositivity
3.10   
5
2.37   
34
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol   
99+
650.90 kJ/mol   
99+
2nd Energy Level
979.00 kJ/mol   
99+
1,414.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,830.00 kJ/mol   
35
4th Energy Level
Not Available   
4,507.00 kJ/mol   
25
5th Energy Level
Not Available   
6,298.70 kJ/mol   
23
6th Energy Level
Not Available   
12,363.00 kJ/mol   
5
7th Energy level
Not Available   
14,530.00 kJ/mol   
5
8th Energy Level
Not Available   
16,730.00 kJ/mol   
7
9th Energy Level
Not Available   
19,860.00 kJ/mol   
7
10th Energy Level
Not Available   
22,240.00 kJ/mol   
12
11th Energy Level
Not Available   
24,670.00 kJ/mol   
15
12th Energy Level
Not Available   
29,730.00 kJ/mol   
12
13th Energy Level
Not Available   
32,446.00 kJ/mol   
12
14th Energy Level
Not Available   
86,450.00 kJ/mol   
1
15th Energy Level
Not Available   
94,170.00 kJ/mol   
2
16th Energy Level
Not Available   
102,300.00 kJ/mol   
3
17th Energy Level
Not Available   
112,700.00 kJ/mol   
4
18th Energy Level
Not Available   
121,600.00 kJ/mol   
5
19th Energy Level
Not Available   
130,700.00 kJ/mol   
6
20th Energy Level
Not Available   
143,400.00 kJ/mol   
8
21st Energy Level
Not Available   
151,440.00 kJ/mol   
8
Electrochemical Equivalent
4.22 g/amp-hr   
6
0.38 g/amp-hr   
99+
Electron Work Function
Not Available   
4.30 eV   
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
88   
30
23   
99+
Electron Configuration
[Rn] 7s2   
[Ar] 3d3 4s2   
Crystal Structure
Body Centered Cubic (BCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
88   
30
23   
99+
Number of Neutrons
138   
16
28   
99+
Number of Electrons
88   
30
23   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
134.00 pm   
99+
Covalent Radius
221.00 pm   
3
153.00 pm   
33
Van der Waals Radius
283.00 pm   
4
200.00 pm   
28
Atomic Weight
226.00 amu   
26
50.94 amu   
99+
Atomic Volume
45.20 cm3/mol   
4
8.78 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Titanium
  
Next Element
Actinium
  
Chromium
  
Valence Electron Potential
20.10 (-eV)   
99+
120.00 (-eV)   
6
Lattice Constant
514.80 pm   
13
303.00 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
5.50 g/cm3   
99+
6.00 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
5.50 g/cm3   
99+
Tensile Strength
Not Available   
800.00 MPa   
6
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available   
0.23 (Pa)   
16
Elasticity properties
  
  
Shear Modulus
Not Available   
47.00 GPa   
16
Bulk Modulus
Not Available   
160.00 GPa   
11
Young's Modulus
Not Available   
128.00 GPa   
15
Poisson Ratio
Not Available   
0.37   
7
Other Mechanical Properties
NA   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
5.00   
99+
5.96   
99+
Magnetic Ordering
Nonmagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
NA   
Superconductor   
Resistivity
100.00 nΩ·m   
31
197.00 nΩ·m   
19
Electrical Conductivity
Not Available   
0.05 106/cm Ω   
35
Electron Affinity
Not Available   
50.60 kJ/mol   
20
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.49 J/(kg K)   
10
Molar Heat Capacity
Not Available   
24.89 J/mol·K   
99+
Thermal Conductivity
18.60 W/m·K   
99+
30.70 W/m·K   
39
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
8.40 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
458.60 kJ/mol   
14
Enthalpy of Fusion
Not Available   
17.57 kJ/mol   
14
Enthalpy of Atomization
163.00 kJ/mol   
99+
514.60 kJ/mol   
13
Standard Molar Entropy
71.00 J/mol.K   
14
28.90 J/mol.K   
99+
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