Periodic Table Element Comparison: Compare Elements - Promethium vs Ruthenium
Compare Promethium and Ruthenium
Compare Promethium and Ruthenium 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 Ruthenium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Ru 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 |
Ruthenium |
44 |
Ru |
101.07 |
Solid |
Silver |
transition metal |
8 |
iron family |
5 |
d |
[Kr] 4d7 5s1 |
2334 °C |
4150 °C |
2, 8, 18, 15, 1 |
CAS7440-18-8 |
Neighborhood Elements of Ruthenium |
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 Ruthenium was discovered by Karl Ernst Claus in year 1844 in Russia. Ruthenium derived its name derived its name from from Ruthenia, the New Latin name for Russia |
Presence: Abundance in Nature and Around Us
N/A |
None |
None |
None |
None |
None |
4×10-7% |
5×10-7% |
8.1e-07 |
9.9×10-8% |
7×10-11% |
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 ![]() |
178 pm |
8.1705739692805 cm3 |
126 pm |
N/A |
2.6 |
![]() |
270.59, 270.59, 428.15 pm |
π/2, π/2, 2 π/3 |
P63/mmc |
194 |
Simple Hexagonal ![]() |
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 |
![]() |
44 |
44 |
44 |
101.07 |
57.07 |
2, 8, 18, 15, 1 |
[Kr] 4d7 5s1 |
4d7 5s1 |
-4;-2 1;2;3;4;5;6;7;8 |
5F5 |
![]() |
Isotopes - Nuclear Properties
Isotopes |
Naturally occurring stable
isotopes: None. |
Naturally occurring stable
isotopes: 100Ru, 101Ru, 102Ru, 104Ru, 96Ru, 98Ru, 99Ru. |
Chemical Properties: Ionization Energies and electron affinity
3 |
N/A |
50 kJ/mol |
540, 1050, 2150, 3970 kJ/mol |
6 |
2.2 |
101.3 kJ/mol |
710.2, 1620, 2747 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 |
12.37 g/cm3 |
8.1705739692805 |
447 GPa |
173 GPa |
220 GPa |
0.3 |
6.5 MPa |
N/A |
2160 MPa |
1.4×107 S/m |
7.1×10-8 m Ω |
0.49 |
120 W/(m K) |
6.4×10-6 K-1 |
Paramagnetic |
N/A |
5.42×10-9 |
5.48×10-10 |
6.7e-05 |
N/A |
5970 m/s |
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 |
2334 °C |
4150 °C |
N/A |
0.49 |
25.7 kJ/mol |
580 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 |
CAS7440-18-8 |
N/A |
4.1 |
3089 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |