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Periodic Table Element Comparison: Compare Elements - Thulium vs Promethium

Compare Thulium and Promethium

Compare Thulium and Promethium 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 Promethium with most reliable information about their properties, attributes, facts, uses etc. You can compare Tm vs Pm on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

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
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

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 Promethium was discovered by Chien Shiung Wu in year 1945 in United States. Promethium derived its name derived its name from from Prometheus of Greek mythology who stole fire from the Gods and gave it to humans

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
1×10-8%
2×10-8%
2.9×10-6%
4.5e-07
2×10-11%
N/A
N/A
None
None
None
None
None

Crystal Structure and Atomic Structure

222 pm
18.124043557558 cm3
N/A
N/A
105
thulium Spectrum
353.75, 353.75, 555.46 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

thulium Crystal Structure
205 pm
19.961453744493 cm3
N/A
N/A
8×103
promethium Spectrum
N/A
N/A
N/A
N/A

Simple Hexagonal

promethium Crystal Structure

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
thulium Shells
61
61
61
145
84
2, 8, 18, 23, 8, 2
[Xe] 4f5 6s2
4f5 6s2
 2;3
6H5/2
promethium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
169Tm.
Naturally occurring stable isotopes:
None.

Chemical Properties: Ionization Energies and electron affinity

3
1.25
50 kJ/mol
596.7, 1160, 2285, 4120 kJ/mol
3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol

Physical Properties

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
7.264 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

Thermal Properties - Enthalpies and thermodynamics

1545 °C
1950 °C
N/A
N/A

 

16.8 kJ/mol
250 kJ/mol
N/A
1.1×103 °C
3×103 °C
N/A
N/A

 

7.7 kJ/mol
290 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-30-4
N/A
4.1
3089
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7440-12-2
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A