Iron Radium Comparison
Periodic Table
Symbol
Fe
Ra
Group Number
8
10
2
16
Period Number
4
7
Block
d block
s block
Element Family
Transition Metal
Alkaline Earth
CAS Number
7439896
99+
7440144
99+
Space Group Name
Im_ 3m
Im_ 3m
Space Group Number
229.00
1
229.00
1
Facts
Interesting Facts
- Iron is not always magnetic in nature, its allotrope are ferromagnetic and the B allotrope is nonmagnetic.
- The blood consists Iron in hemoglobin molecules to transfer Oxygen in the body.
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
Sources
Earth's crust, Found in Minerals
Mining, Ores of metals
History
Who Discovered
Unknown
Not Available
Discovery
Before 5000 BC
In 1898
Abundance
Abundance In Universe
1.1 * 10-1 %
1
Not Available
Abundance In Sun
~0.1 %
1
~-9999 %
Abundance In Meteorites
22.00 %
1
Not Available
Abundance In Earth's Crust
6.30 %
2
0.00 %
99+
Abundance In Oceans
0.00 %
12
0.00 %
99+
Abundance In Humans
0.01 %
5
0.00 %
20
Uses
Uses & Benefits
- Iron metal alloy steel is used in the application of civil engineering and manufacturing.
- Alloys of iron with nickel, vanadium, chromium, tungsten and manganese have very useful properties.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
- It is used in luminous paints.
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
NA
Medical Uses
Pharmaceutical Industry, Surgical Instruments Manufacturing
Pharmaceutical Industry
Other Uses
Alloys, Sculptures, Statues
NA
Biological Properties
Toxicity
Non Toxic
Highly Toxic
Present in Human Body
Yes
No
In Blood
447.00 Blood/mg dm-3
3
Not Available
In Bone
380.00 p.p.m.
5
Not Available
Physical Properties
Melting Point
1,535.00 °C
25
700.00 °C
99+
Boiling Point
2,750.00 °C
37
1,737.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Gray
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
4.00
10
Not Available
Brinell Hardness
200.00 MPa
40
Not Available
Vickers Hardness
608.00 MPa
18
Not Available
Speed of Sound
5,120.00 m/s
8
Not Available
Optical Properties
Reflectivity
65.00 %
12
Not Available
Allotropes
Yes
No
α Allotropes
Ferrite (alpha Iron)
Not Available
β Allotropes
beta Iron
Not Available
γ Allotropes
gamma Iron
Not Available
Chemical Properties
Chemical Formula
Fe
Ra
Isotopes
Known Isotopes
26
13
33
6
Electronegativity
Pauling Electronegativity
1.83
14
0.90
99+
Sanderson Electronegativity
2.20
7
Not Available
Allred Rochow Electronegativity
1.64
8
0.97
38
Mulliken-Jaffe Electronegativity
Not Available
0.92
20
Allen Electronegativity
1.80
12
0.89
99+
Electropositivity
Pauling Electropositivity
2.17
40
3.10
5
Ionization Energies
1st Energy Level
762.50 kJ/mol
17
509.30 kJ/mol
99+
2nd Energy Level
1,561.90 kJ/mol
36
979.00 kJ/mol
99+
3rd Energy Level
2,957.00 kJ/mol
29
Not Available
4th Energy Level
5,290.00 kJ/mol
16
Not Available
5th Energy Level
7,240.00 kJ/mol
16
Not Available
6th Energy Level
9,560.00 kJ/mol
14
Not Available
7th Energy level
12,060.00 kJ/mol
15
Not Available
8th Energy Level
14,580.00 kJ/mol
14
Not Available
9th Energy Level
22,540.00 kJ/mol
5
Not Available
10th Energy Level
25,290.00 kJ/mol
8
Not Available
11th Energy Level
28,000.00 kJ/mol
9
Not Available
12th Energy Level
31,920.00 kJ/mol
9
Not Available
13th Energy Level
34,830.00 kJ/mol
9
Not Available
14th Energy Level
37,840.00 kJ/mol
11
Not Available
15th Energy Level
44,100.00 kJ/mol
11
Not Available
16th Energy Level
47,206.00 kJ/mol
13
Not Available
17th Energy Level
122,200.00 kJ/mol
1
Not Available
18th Energy Level
131,000.00 kJ/mol
2
Not Available
19th Energy Level
140,500.00 kJ/mol
3
Not Available
20th Energy Level
152,600.00 kJ/mol
5
Not Available
21st Energy Level
163,000.00 kJ/mol
5
Not Available
22nd Energy Level
173,600.00 kJ/mol
4
Not Available
23rd Energy Level
188,100.00 kJ/mol
4
Not Available
24th Energy Level
195,200.00 kJ/mol
1
Not Available
Electrochemical Equivalent
0.69 g/amp-hr
99+
4.22 g/amp-hr
6
Electron Work Function
4.70 eV
10
Not Available
Other Chemical Properties
Corrosion, Ionization, Solubility
Ionization, Radioactive Isotopes, Radioactivity
Atomic Properties
Atomic Number
26
99+
88
30
Electron Configuration
[Ar] 3d6 4s2
[Rn] 7s2
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
26
99+
88
30
Number of Neutrons
30
99+
138
16
Number of Electrons
26
99+
88
30
Radius of an Atom
Atomic Radius
126.00 pm
99+
Not Available
Covalent Radius
132.00 pm
99+
221.00 pm
3
Van der Waals Radius
200.00 pm
28
283.00 pm
4
Atomic Weight
55.85 amu
99+
226.00 amu
26
Atomic Volume
7.10 cm3/mol
99+
45.20 cm3/mol
4
Adjacent Atomic Numbers
Valence Electron Potential
67.00 (-eV)
20
20.10 (-eV)
99+
Lattice Constant
286.65 pm
99+
514.80 pm
13
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
7.87 g/cm3
99+
5.50 g/cm3
99+
Density When Liquid (at m.p.)
6.98 g/cm3
35
Not Available
Tensile Strength
11,000.00 MPa
1
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa)
28
Not Available
Vapor Pressure at 2000 K
36.80 (Pa)
5
Not Available
Elasticity properties
Shear Modulus
82.00 GPa
11
Not Available
Bulk Modulus
170.00 GPa
10
Not Available
Young's Modulus
211.00 GPa
9
Not Available
Poisson Ratio
0.29
15
Not Available
Other Mechanical Properties
Ductile, Malleable, Weldable
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
7.20
99+
5.00
99+
Magnetic Ordering
Ferromagnetic
Nonmagnetic
Permeability
6.3 * 10-3 H/m
1
Not Available
Susceptibility
2,00,000.00
1
Not Available
Electrical Properties
Electrical Property
Conductor
NA
Resistivity
96.10 nΩ·m
32
100.00 nΩ·m
31
Electrical Conductivity
0.10 106/cm Ω
20
Not Available
Electron Affinity
15.70 kJ/mol
34
Not Available
Thermal Properties
Specific Heat
0.44 J/(kg K)
13
0.12 J/(kg K)
40
Molar Heat Capacity
25.10 J/mol·K
99+
Not Available
Thermal Conductivity
80.40 W/m·K
22
18.60 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
11.80 µm/(m·K)
33
Not Available
Enthalpy
Enthalpy of Vaporization
351.00 kJ/mol
23
Not Available
Enthalpy of Fusion
14.90 kJ/mol
22
Not Available
Enthalpy of Atomization
414.20 kJ/mol
19
163.00 kJ/mol
99+
Standard Molar Entropy
27.30 J/mol.K
99+
71.00 J/mol.K
14
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