;

Periodic Table Element Comparison: Compare Elements - Promethium vs Rubidium

Compare Promethium and Rubidium

Compare Promethium and Rubidium 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 Rubidium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Rb 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
Rubidium
37
Rb
85.4678
Solid
Silver
alkali metal
1
lithium family 
5
s
[Kr] 5s1
39.31 °C
688 °C
2, 8, 18, 8, 1
CAS7440-17-7
Neighborhood Elements of Rubidium

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 Rubidium was discovered by Robert Bunsen in year 1861 in Germany. Rubidium derived its name derived its name from from the Latin rubidus, meaning 'deep red'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
1×10-6%
3×10-6%
3.2e-06
6e-05
1.2e-07
4.6e-06

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
265 pm
55.788381201044 cm3
211 pm
N/A
0.38
rubidium Spectrum
558.5, 558.5, 558.5 pm
π/2, π/2, π/2
Im_ 3m
229

Body Centered Cubic

rubidium 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
37
37
37
85.4678
48.4678
2, 8, 18, 8, 1
[Kr] 5s1
5s1
-1  1
2S1/2
rubidium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
85Rb.

Chemical Properties: Ionization Energies and electron affinity

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol
1
0.82
46.9 kJ/mol
403, 2633, 3860, 5080, 6850, 8140, 9570, 13120, 1.45×104, 26740 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
1.532 g/cm3
55.788381201044

 

2.4 GPa
N/A
2.5 GPa
N/A


 

0.3 MPa
N/A
0.216 MPa

 

8.3×106 S/m
1.2×10-7 m Ω
N/A

 

58 W/(m K)
N/A

 

Paramagnetic
N/A
2.6×10-9
2.22×10-10
3.98×10-6

 

N/A

 

1.3×103 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
39.31 °C
688 °C
2093 K
N/A

 

2.19 kJ/mol
72 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
CAS7440-17-7
RTECSVL8500000
4.3
1423
N/A
3
Water Reactive
2
N/A

 

N/A
N/A