Darmstadtium vs Polonium
Periodic Table
Symbol
Ds
Po
Group Number
10
8
16
2
Period Number
7
6
Block
d block
p block
Element Family
Probably Transition
Post-Transition
CAS Number
54083771
8
7440086
99+
Space Group Name
Not Available
Pm-3m
Space Group Number
Not Available
221.00
3
Facts
Interesting Facts
Not Available
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
Sources
Synthetically Produced
Mining, Ores of metals
History
Who Discovered
Gesellschaft für Schwerionenforschung
Pierre Curie and Marie Curie
Discovery
In 1994
In 1898
Abundance
Abundance In Oceans
Not Available
0.00 %
99+
Uses
Uses & Benefits
- Currently known uses of Darmstadtium metal are limited to research purpose only. As only few atoms of this metal are produced.
- Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
- A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
Industrial Uses
NA
Aerospace Industry, Ammunition Industry
Medical Uses
NA
NA
Other Uses
Research Purposes
Alloys
Biological Properties
Toxicity
Unknown
Highly 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
Not Available
254.00 °C
99+
Boiling Point
Not Available
962.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Unknown
Silver
Luster
Unknown Luster
NA
Hardness
Speed of Sound
5,090.00 m/s
9
Not Available
Optical Properties
Allotropes
No
Yes
α Allotropes
Not Available
α-polonium
β Allotropes
Not Available
β-polonium
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Ds
Po
Isotopes
Known Isotopes
9
29
29
10
Electronegativity
Pauling Electronegativity
Not Available
2.00
7
Allred Rochow Electronegativity
Not Available
1.76
2
Mulliken-Jaffe Electronegativity
Not Available
2.48
1
Allen Electronegativity
Not Available
2.19
2
Electropositivity
Pauling Electropositivity
Not Available
2.00
99+
Ionization Energies
1st Energy Level
955.20 kJ/mol
5
812.10 kJ/mol
14
2nd Energy Level
1,891.10 kJ/mol
16
Not Available
3rd Energy Level
3,029.60 kJ/mol
25
Not Available
4th Energy Level
3,955.90 kJ/mol
40
Not Available
5th Energy Level
5,113.70 kJ/mol
33
Not Available
Electrochemical Equivalent
Not Available
3.90 g/amp-hr
8
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
Atomic Properties
Atomic Number
110
8
84
32
Electron Configuration
[Rn] 5f14 6d8 7s2
[Xe] 4f14 5d10 6s2 6p4
Crystal Structure
Body Centered Cubic (BCC)
Monoclinic (MON)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
MON-Crystal-Structure-of-Polonium.jpg#100
Atom
Number of Protons
110
8
84
32
Number of Neutrons
161
3
125
19
Number of Electrons
110
8
84
32
Radius of an Atom
Atomic Radius
132.00 pm
99+
168.00 pm
23
Covalent Radius
128.00 pm
99+
140.00 pm
99+
Van der Waals Radius
Not Available
197.00 pm
29
Atomic Weight
281.00 amu
6
209.00 amu
28
Atomic Volume
Not Available
22.23 cm3/mol
13
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
Not Available
Lattice Constant
Not Available
335.90 pm
99+
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
9.20 g/cm3
99+
Density When Liquid (at m.p.)
Not Available
9.40 g/cm3
19
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
9.32
31
Magnetic Ordering
Unknown
Nonmagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
0.40 nΩ·m
99+
Electrical Conductivity
Not Available
0.02 106/cm Ω
99+
Electron Affinity
Not Available
183.30 kJ/mol
3
Thermal Properties
Specific Heat
Not Available
0.12 J/(kg K)
40
Molar Heat Capacity
Not Available
26.40 J/mol·K
28
Thermal Conductivity
Not Available
20.00 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
23.50 µm/(m·K)
16
Enthalpy
Enthalpy of Vaporization
Not Available
60.30 kJ/mol
99+
Enthalpy of Fusion
Not Available
13.00 kJ/mol
26
Enthalpy of Atomization
Not Available
134.00 kJ/mol
99+
Standard Molar Entropy
Not Available
Not Available
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