Periodic Table Element Comparison: Compare Elements - Promethium vs Radon
Compare Promethium and Radon
Compare Promethium and Radon on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Promethium vs Radon with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Rn on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
Facts
Name |
Atomic Number |
Atomic Symbol |
Atomic Weight |
Phase |
Color |
Classification |
Group in Periodic Table |
Group Name |
Period in Periodic Table |
Block in Periodic Table |
Electronic Configuration |
Melting Point |
Boiling Point |
Electronic Shell Structure |
CAS Number |
Neighborhood Elements |
Promethium |
61 |
Pm |
145 |
Solid |
Silver |
lanthanide |
N/A |
6 |
f |
[Xe] 4f5 6s2 |
1.1×103 °C |
3×103 °C |
2, 8, 18, 23, 8, 2 |
CAS7440-12-2 |
Neighborhood Elements of Promethium |
Radon |
86 |
Rn |
222 |
Gas |
Colorless |
noble gas |
18 |
helium family or neon family |
6 |
p |
[Xe] 4f14 5d10 6s2 6p6 |
-71 °C |
-61.7 °C |
2, 8, 18, 32, 18, 8 |
CAS10043-92-2 |
Neighborhood Elements of Radon |
History
History |
The element Promethium was discovered by Chien Shiung Wu in year 1945 in United States. Promethium derived its name from from Prometheus of Greek mythology who stole fire from the Gods and gave it to humans |
The element Radon was discovered by Friedrich Ernst Dorn in year 1900 in Germany. Radon derived its name derived its name from From radium, as it was first detected as an emission from radium during radioactive decay |
Presence: Abundance in Nature and Around Us
N/A |
None |
None |
None |
None |
None |
N/A |
N/A |
N/A |
N/A |
6×10-20% |
N/A |
Crystal Structure and Atomic Structure
Atomic Radius |
Atomic Volume |
Covalent Radius |
Van der Waals Radius |
Neutron Cross Section |
Atomic Spectrum |
Lattice Constant |
Lattice Angle |
Space Group Name |
Space Group Number |
Crystal Structure |
205 pm |
19.961453744493 cm3 |
N/A |
N/A |
8×103 |
![]() |
N/A |
N/A |
N/A |
N/A |
Simple Hexagonal ![]() |
120 pm |
22.816032887975 cm3 |
145 pm |
N/A |
0.7 |
![]() |
N/A |
N/A |
N/A |
N/A |
Face Centered Cubic ![]() |
Atomic and Orbital Properties
Atomic Number |
Number of Electrons (with no charge) |
Number of Protons |
Mass Number |
Number of Neutrons |
Shell structure (Electrons per energy level) |
Electron Configuration |
Valence Electrons |
Oxidation State |
Atomic Term Symbol (Quantum Numbers) |
Shell structure |
61 |
61 |
61 |
145 |
84 |
2, 8, 18, 23, 8, 2 |
[Xe] 4f5 6s2 |
4f5 6s2 |
2;3 |
6H5/2 |
![]() |
86 |
86 |
86 |
222 |
136 |
2, 8, 18, 32, 18, 8 |
[Xe] 4f14 5d10 6s2 6p6 |
6s2 6p6 |
2;6 |
1S0 |
![]() |
Isotopes - Nuclear Properties
Isotopes |
Naturally occurring stable
isotopes: None. |
Naturally occurring stable
isotopes: None. |
Chemical Properties: Ionization Energies and electron affinity
3 |
N/A |
50 kJ/mol |
540, 1050, 2150, 3970 kJ/mol |
6 |
N/A |
0 kJ/mol |
1037 kJ/mol |
Physical Properties
Density |
Molar Volume |
Elastic Properties |
Young Modulus |
Shear Modulus |
Bulk Modulus |
Poisson Ratio |
Hardness - Tests to Measure of Hardness of Element |
Mohs Hardness |
Vickers Hardness |
Brinell Hardness |
Electrical Properties |
Electrical Conductivity |
Resistivity |
Superconducting Point |
Heat and Conduction Properties |
Thermal Conductivity |
Thermal Expansion |
Magnetic Properties |
Magnetic Type |
Curie Point |
Mass Magnetic Susceptibility |
Molar Magnetic Susceptibility |
Volume Magnetic Susceptibility |
Optical Properties |
Refractive Index |
Acoustic Properties |
Speed of Sound |
7.264 g/cm3 |
19.961453744493 |
46 GPa |
18 GPa |
33 GPa |
0.28 |
N/A |
N/A |
N/A |
1.3×106 S/m |
7.5×10-7 m Ω |
N/A |
15 W/(m K) |
0.000011 K-1 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
9.73 g/l |
22.816032887975 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
0.00361 W/(m K) |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
Thermal Properties - Enthalpies and thermodynamics
1.1×103 °C |
3×103 °C |
N/A |
N/A |
7.7 kJ/mol |
290 kJ/mol |
N/A |
-71 °C |
-61.7 °C |
377 K |
N/A |
3 kJ/mol |
17 kJ/mol |
N/A |
Regulatory and Health - Health and Safety Parameters and Guidelines
CAS Number |
RTECS Number |
DOT Hazard Class |
DOT Numbers |
EU Number |
NFPA Fire Rating |
NFPA Hazards |
NFPA Health Rating |
NFPA Reactivity Rating |
More |
AutoIgnition Point |
Flashpoint |
CAS7440-12-2 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
CAS10043-92-2 |
RTECSVE3750000 |
7 |
2912 |
EU233-146-0 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |