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Periodic Table Element Comparison: Compare Elements - Iridium vs Promethium

Compare Iridium and Promethium

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

Facts

Iridium
77
Ir
192.217
Solid
Silver
transition metal
9
cobalt family 
6
d
[Xe] 4f14 5d7 6s2
2466 °C
4428 °C
2, 8, 18, 32, 15, 2
CAS7439-88-5
Neighborhood Elements of Iridium
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 Iridium was discovered by Smithson Tennant in year 1803 in France and United Kingdom. Iridium derived its name from from Iris, the Greek goddess of the rainbow
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 %)
2×10-7%
2×10-7%
5.4e-07
4×10-8%
N/A
N/A
N/A
None
None
None
None
None

Crystal Structure and Atomic Structure

180 pm
8.5202570921986 cm3
137 pm
N/A
425
iridium Spectrum
383.9, 383.9, 383.9 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

iridium 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
77
77
77
192.217
115.217
2, 8, 18, 32, 15, 2
[Xe] 4f14 5d7 6s2
5d7 6s2
-3;-1  1;2;3;4;5;6;7;8;9
4F9/2
iridium 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:
191Ir, 193Ir.
Naturally occurring stable isotopes:
None.

Chemical Properties: Ionization Energies and electron affinity

6
2.2
151 kJ/mol
880, 1.6×103 kJ/mol
3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol

Physical Properties

22.56 g/cm3
8.5202570921986

 

528 GPa
210 GPa
320 GPa
0.26


 

6.5 MPa
1760 MPa
1670 MPa

 

2.1×107 S/m
4.7×10-8 m Ω
0.11

 

150 W/(m K)
6.4×10-6 K-1

 

Paramagnetic
N/A
1.67×10-9
3.21×10-10
3.77e-05

 

N/A

 

4825 m/s
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

2466 °C
4428 °C
N/A
0.11

 

26 kJ/mol
560 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

CAS7439-88-5
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