Periodic Table Element Comparison: Compare Elements - Thulium vs Gadolinium
Compare Thulium and Gadolinium
Compare Thulium and Gadolinium 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 Thulium vs Gadolinium with most reliable information about their properties, attributes, facts, uses etc. You can compare Tm vs Gd 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 |
Thulium |
69 |
Tm |
168.93421 |
Solid |
Silver |
lanthanide |
N/A |
6 |
f |
[Xe] 4f13 6s2 |
1545 °C |
1950 °C |
2, 8, 18, 31, 8, 2 |
CAS7440-30-4 |
Neighborhood Elements of Thulium |
Gadolinium |
64 |
Gd |
157.25 |
Solid |
Silver |
lanthanide |
N/A |
6 |
f |
[Xe] 4f7 5d1 6s2 |
1313 °C |
3250 °C |
2, 8, 18, 25, 9, 2 |
CAS7440-54-2 |
Neighborhood Elements of Gadolinium |
History
History |
The element Thulium was discovered by Per Teodor Cleve in year 1879 in Sweden. Thulium derived its name from from Thule, the ancient name for Scandinavia |
The element Gadolinium was discovered by Jean Charles Galissard de Marignac in year 1880 in Switzerland. Gadolinium derived its name derived its name from from Johan Gadolin, chemist, physicist and mineralogist |
Presence: Abundance in Nature and Around Us
1×10-8% |
2×10-8% |
2.9×10-6% |
4.5e-07 |
2×10-11% |
N/A |
2×10-7% |
2×10-7% |
2.3e-07 |
5.2e-06 |
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 |
222 pm |
18.124043557558 cm3 |
N/A |
N/A |
105 |
![]() |
353.75, 353.75, 555.46 pm |
π/2, π/2, 2 π/3 |
P63/mmc |
194 |
Simple Hexagonal ![]() |
233 pm |
19.902543981774 cm3 |
N/A |
N/A |
4.9×104 |
![]() |
363.6, 363.6, 578.26 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 |
69 |
69 |
69 |
168.93421 |
99.93421 |
2, 8, 18, 31, 8, 2 |
[Xe] 4f13 6s2 |
4f13 6s2 |
2;3 |
2F7/2 |
![]() |
64 |
64 |
64 |
157.25 |
93.25 |
2, 8, 18, 25, 9, 2 |
[Xe] 4f7 5d1 6s2 |
4f7 5d1 6s2 |
1;2;3 |
9D2 |
![]() |
Isotopes - Nuclear Properties
Isotopes |
Naturally occurring stable
isotopes: 169Tm. |
Naturally occurring stable
isotopes: 154Gd, 155Gd, 156Gd, 157Gd, 158Gd, 160Gd. |
Chemical Properties: Ionization Energies and electron affinity
3 |
1.25 |
50 kJ/mol |
596.7, 1160, 2285, 4120 kJ/mol |
3 |
1.2 |
50 kJ/mol |
593.4, 1170, 1990, 4250 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 |
9.321 g/cm3 |
18.124043557558 |
74 GPa |
31 GPa |
45 GPa |
0.21 |
N/A |
520 MPa |
471 MPa |
1.4×106 S/m |
7×10-7 m Ω |
N/A |
17 W/(m K) |
0.0000133 K-1 |
Paramagnetic |
25 K |
1.99×10-6 |
3.36179×10-7 |
0.0185488 |
N/A |
N/A |
7.901 g/cm3 |
19.902543981774 |
55 GPa |
22 GPa |
38 GPa |
0.26 |
N/A |
570 MPa |
N/A |
7.7×105 S/m |
1.3×10-6 m Ω |
1.083 |
11 W/(m K) |
9.4×10-6 K-1 |
Ferromagnetic |
292 K |
N/A |
N/A |
N/A |
N/A |
2680 m/s |
Thermal Properties - Enthalpies and thermodynamics
1545 °C |
1950 °C |
N/A |
N/A |
16.8 kJ/mol |
250 kJ/mol |
N/A |
1313 °C |
3250 °C |
N/A |
1.083 |
10 kJ/mol |
305 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 |
CAS7440-30-4 |
N/A |
4.1 |
3089 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
CAS7440-54-2 |
RTECSLW3850000 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |