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Periodic Table Element Comparison: Compare Elements - Promethium vs Rhodium

Compare Promethium and Rhodium

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

Facts

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
Rhodium
45
Rh
102.9055
Solid
Silver
transition metal
9
cobalt family 
5
d
[Kr] 4d8 5s1
1964 °C
3695 °C
2, 8, 18, 16, 1
CAS7440-16-6
Neighborhood Elements of Rhodium

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 Rhodium was discovered by William Hyde Wollaston in year 1803 in United Kingdom. Rhodium derived its name derived its name from from the Greek rhodos, meaning 'rose coloured'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
6×10-8%
2×10-7%
1.8e-07
7×10-8%
N/A
N/A

Crystal Structure and Atomic 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
173 pm
8.2655020080321 cm3
135 pm
N/A
145
rhodium Spectrum
380.34, 380.34, 380.34 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

rhodium 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
61
61
61
145
84
2, 8, 18, 23, 8, 2
[Xe] 4f5 6s2
4f5 6s2
 2;3
6H5/2
promethium Shells
45
45
45
102.9055
57.9055
2, 8, 18, 16, 1
[Kr] 4d8 5s1
4d8 5s1
-3;-1  1;2;3;4;5;6
4F9/2
rhodium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
103Rh.

Chemical Properties: Ionization Energies and electron affinity

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol
6
2.28
109.7 kJ/mol
719.7, 1740, 2997 kJ/mol

Physical Properties

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
12.45 g/cm3
8.2655020080321

 

275 GPa
150 GPa
380 GPa
0.26


 

6 MPa
1246 MPa
1.1×103 MPa

 

2.3×107 S/m
4.3×10-8 m Ω
N/A

 

150 W/(m K)
8.2×10-6 K-1

 

Paramagnetic
N/A
1.36×10-8
1.4×10-9
0.0001693

 

N/A

 

4.7×103 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
1964 °C
3695 °C
N/A
N/A

 

21.7 kJ/mol
495 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

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

 

N/A
N/A
CAS7440-16-6
RTECSVI9069000
4.1
3089
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A