;

Periodic Table Element Comparison: Compare Elements - Promethium vs Berkelium

Compare Promethium and Berkelium

Compare Promethium and Berkelium 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 Berkelium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Bk 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
Berkelium
97
Bk
247
Solid
N/A
actinide
N/A
 
7
f
[Rn] 5f9 7s2
1050 °C
N/A
2, 8, 18, 32, 27, 8, 2
CAS7440-40-6
Neighborhood Elements of Berkelium

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 Berkelium was discovered by Lawrence Berkeley National Laboratory in year 1949 in United States. Berkelium derived its name derived its name from from Berkeley, California, where the element was first synthesized, by analogy with terbium

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
N/A
None
None
None
None
None

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
N/A
16.711772665765 cm3
N/A
N/A
710
berkelium Spectrum
341.6, 341.6, 1106.9 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

berkelium 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
97
97
97
247
150
2, 8, 18, 32, 27, 8, 2
[Rn] 5f9 7s2
5f9 7s2
 3;4
6H15/2
berkelium Shells

Isotopes - Nuclear Properties

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

Chemical Properties: Ionization Energies and electron affinity

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol
4
1.3
N/A
601 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
14.78 g/cm3
16.711772665765

 

N/A
N/A
N/A
N/A


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

10 W/(m K)
N/A

 

N/A
N/A
N/A
N/A
N/A

 

N/A

 

N/A

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
1050 °C
N/A
N/A
N/A

 

N/A
N/A
{"N/A", "N/A"} J/(kg K)

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
CAS7440-40-6
{N/A, N/A}
{N/A, N/A}
"N/A", "N/A"
{N/A, N/A}
{N/A, N/A}
N/ A, N/ A
{N/A, N/A}
{N/A, N/A}

 

N/A
N/A