Nobelium vs Radium
Periodic Table
Symbol
No
Ra
Group Number
Not Available
2
16
Period Number
7
7
Block
f block
s block
Element Family
Actinide
Alkaline Earth
CAS Number
10028145
16
7440144
99+
Space Group Name
Not Available
Im_ 3m
Space Group Number
Not Available
229.00
1
Facts
Interesting Facts
- The most stable isotope of Nobelium metal is No-259.
- No-259 has a half-life of fifty-eight minutes.
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
Sources
Bombarding Curium-246 or Curium-249 with Carbon-12 Nuclei, Found in Minerals, Mining
Mining, Ores of metals
History
Who Discovered
Joint Institute for Nuclear Research
Not Available
Discovery
In 1966
In 1898
Abundance
Abundance In Earth's Crust
Not Available
0.00 %
99+
Abundance In Oceans
Not Available
0.00 %
99+
Abundance In Humans
Not Available
0.00 %
20
Uses
Uses & Benefits
- Currently known uses of Nobelium metal are limited to research purpose only.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
- It is used in luminous paints.
Industrial Uses
NA
NA
Medical Uses
NA
Pharmaceutical Industry
Other Uses
Research Purposes
NA
Biological Properties
Toxicity
Unknown
Highly Toxic
Present in Human Body
No
No
In Blood
0.00 Blood/mg dm-3
37
Not Available
In Bone
0.00 p.p.m.
36
Not Available
Physical Properties
Melting Point
827.00 °C
99+
700.00 °C
99+
Boiling Point
Not Available
1,737.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Unknown
Silvery White
Luster
Unknown Luster
Metallic
Hardness
Speed of Sound
Not Available
Not Available
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
No
Ra
Isotopes
Known Isotopes
13
26
33
6
Electronegativity
Pauling Electronegativity
1.30
32
0.90
99+
Allred Rochow Electronegativity
1.20
27
0.97
38
Mulliken-Jaffe Electronegativity
Not Available
0.92
20
Allen Electronegativity
Not Available
0.89
99+
Electropositivity
Pauling Electropositivity
2.70
22
3.10
5
Ionization Energies
1st Energy Level
642.00 kJ/mol
99+
509.30 kJ/mol
99+
2nd Energy Level
1,254.00 kJ/mol
99+
979.00 kJ/mol
99+
3rd Energy Level
2,643.00 kJ/mol
99+
Not Available
4th Energy Level
3,956.00 kJ/mol
39
Not Available
Electrochemical Equivalent
4.83 g/amp-hr
4
4.22 g/amp-hr
6
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity
Atomic Properties
Atomic Number
102
16
88
30
Electron Configuration
[Rn] 5f14 7s2
[Rn] 7s2
Crystal Structure
Not Known
Body Centered Cubic (BCC)
Crystal Lattice
Unknown-Crystal-Structure-of-Nobelium.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
102
16
88
30
Number of Neutrons
157
7
138
16
Number of Electrons
102
16
88
30
Radius of an Atom
Covalent Radius
Not Available
221.00 pm
3
Van der Waals Radius
246.00 pm
8
283.00 pm
4
Atomic Weight
259.00 amu
13
226.00 amu
26
Atomic Volume
Not Available
45.20 cm3/mol
4
Adjacent Atomic Numbers
Valence Electron Potential
26.00 (-eV)
99+
20.10 (-eV)
99+
Lattice Constant
Not Available
514.80 pm
13
Lattice Angles
NA
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
Not Available
5.50 g/cm3
99+
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
5.00
99+
Magnetic Ordering
Unknown
Nonmagnetic
Electrical Properties
Electrical Property
Unknown
NA
Resistivity
Not Available
100.00 nΩ·m
31
Thermal Properties
Specific Heat
Not Available
0.12 J/(kg K)
40
Molar Heat Capacity
Not Available
Not Available
Thermal Conductivity
Not Available
18.60 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Not Available
Enthalpy
Enthalpy of Atomization
Not Available
163.00 kJ/mol
99+
Standard Molar Entropy
Not Available
71.00 J/mol.K
14
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