Rutherfordium vs Technetium
Periodic Table
Symbol
Rf
Tc
Group Number
4
14
7
11
Period Number
7
5
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
53850365
13
7440268
99+
Space Group Name
Not Available
P63/mmc
Space Group Number
Not Available
194.00
5
Facts
Interesting Facts
- Rutherfordium does not occur in nature as it is a synthetic element.
- Till date Rutherfordium metal has 15 radioisotopes created synthetically.
- Original name of Technetium was Masurium.
- At the time of its discovery it found in sample of Molybdenum.
Sources
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced
Made by Bombarding Molybdenum with Deuterons
History
Who Discovered
Joint Institute for Nuclear Research
Emilio Segrè and Carlo Perriero
Discovery
In 1964
In 1937
Abundance
Uses
Uses & Benefits
- Currently known uses of Rutherfordium metal are limited to research purpose only.
- Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
Industrial Uses
NA
NA
Medical Uses
NA
NA
Other Uses
Alloys, Research Purposes
Alloys, Nuclear Research, Research Purposes
Biological Properties
Toxicity
Unknown
Low Toxic
Present in Human Body
No
No
In Blood
0.00 Blood/mg dm-3
37
0.00 Blood/mg dm-3
37
In Bone
0.00 p.p.m.
36
0.00 p.p.m.
36
Physical Properties
Melting Point
2,100.00 °C
11
2,200.00 °C
9
Boiling Point
5,500.00 °C
3
4,877.00 °C
7
Appearance
Physical State
Solid
Solid
Color
Unknown
Shiny Gray
Luster
Unknown Luster
NA
Hardness
Speed of Sound
Not Available
16,200.00 m/s
1
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
Rf
Tc
Isotopes
Known Isotopes
13
26
18
21
Electronegativity
Pauling Electronegativity
Not Available
1.90
11
Allred Rochow Electronegativity
Not Available
1.36
20
Allen Electronegativity
Not Available
1.51
28
Electropositivity
Pauling Electropositivity
Not Available
2.10
99+
Ionization Energies
1st Energy Level
579.90 kJ/mol
99+
702.00 kJ/mol
36
2nd Energy Level
1,389.40 kJ/mol
99+
1,470.00 kJ/mol
99+
3rd Energy Level
2,296.40 kJ/mol
99+
2,850.00 kJ/mol
33
4th Energy Level
3,077.90 kJ/mol
99+
Not Available
Electrochemical Equivalent
Not Available
0.52 g/amp-hr
99+
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Atomic Properties
Atomic Number
104
14
43
99+
Electron Configuration
[Rn] 5f14 6d2 7s2
[Kr] 4d5 5s2
Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
HCP-Crystal-Structure-of-Technetium.jpg#100
Atom
Number of Protons
104
14
43
99+
Number of Neutrons
157
7
55
99+
Number of Electrons
104
14
43
99+
Radius of an Atom
Atomic Radius
150.00 pm
33
136.00 pm
99+
Covalent Radius
157.00 pm
31
147.00 pm
37
Van der Waals Radius
Not Available
200.00 pm
28
Atomic Weight
267.00 amu
11
98.00 amu
99+
Atomic Volume
Not Available
8.50 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
180.00 (-eV)
3
Lattice Constant
Not Available
273.50 pm
99+
Lattice Angles
NA
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
1.60
5
Mechanical Properties
Density
Density At Room Temperature
23.20 g/cm3
8
11.00 g/cm3
34
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Elasticity properties
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
11.50
24
Magnetic Ordering
Unknown
Paramagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
200.00 nΩ·m
18
Electrical Conductivity
Not Available
0.07 106/cm Ω
30
Electron Affinity
Not Available
53.00 kJ/mol
18
Thermal Properties
Specific Heat
Not Available
0.21 J/(kg K)
29
Molar Heat Capacity
Not Available
24.27 J/mol·K
99+
Thermal Conductivity
Not Available
50.60 W/m·K
30
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
7.10 µm/(m·K)
99+
Enthalpy
Enthalpy of Vaporization
Not Available
660.00 kJ/mol
6
Enthalpy of Fusion
Not Available
23.01 kJ/mol
9
Enthalpy of Atomization
Not Available
649.00 kJ/mol
8
Standard Molar Entropy
Not Available
181.10 J/mol.K
2
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