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Periodic Table Element Comparison: Compare Elements - Promethium vs Cadmium

Compare Promethium and Cadmium

Compare Promethium and Cadmium 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 Cadmium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Cd 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
Cadmium
48
Cd
112.411
Solid
Silver
transition metal
12
zinc family 
5
d
[Kr] 4d10 5s2
321.07 °C
767 °C
2, 8, 18, 18, 2
CAS7440-43-9
Neighborhood Elements of Cadmium

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 Cadmium was discovered by Karl Samuel Leberecht Hermann in year 1817 in Germany. Cadmium derived its name derived its name from from the New Latin cadmia, from King Kadmos

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
2×10-7%
6×10-7%
4.4e-07
1.5e-07
5×10-9%
7e-07

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
161 pm
12.99549132948 cm3
148 pm
158 pm
2450
cadmium Spectrum
297.94, 297.94, 561.86 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

cadmium 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
48
48
48
112.411
64.411
2, 8, 18, 18, 2
[Kr] 4d10 5s2
4d10 5s2
-2  1;2
1S0
cadmium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
106Cd, 108Cd, 110Cd, 111Cd, 112Cd, 114Cd.

Chemical Properties: Ionization Energies and electron affinity

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol
2
1.69
0 kJ/mol
867.8, 1631.4, 3616 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
8.65 g/cm3
12.99549132948

 

50 GPa
19 GPa
42 GPa
0.3


 

2 MPa
N/A
203 MPa

 

1.4×107 S/m
7×10-8 m Ω
0.517

 

97 W/(m K)
0.0000308 K-1

 

Diamagnetic
N/A
-2.3×10-9
-2.59×10-10
-1.99e-05

 

N/A

 

2310 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
321.07 °C
767 °C
N/A
0.517

 

6.3 kJ/mol
100 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
CAS7440-43-9
RTECSEU9800000
6.1
2570
N/A
2
N/A
2
0

 

250 °C
N/A