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Periodic Table Element Comparison: Compare Elements - Samarium vs Praseodymium

Compare Samarium and Praseodymium

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

Facts

Samarium
62
Sm
150.36
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 4f6 6s2
1072 °C
1803 °C
2, 8, 18, 24, 8, 2
CAS7440-19-9
Neighborhood Elements of Samarium
Praseodymium
59
Pr
140.90765
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 4f3 6s2
931 °C
3290 °C
2, 8, 18, 21, 8, 2
CAS7440-10-0
Neighborhood Elements of Praseodymium

History

History
The element Samarium was discovered by Lecoq de Boisbaudran in year 1879 in France. Samarium derived its name from from Samarskite, the name of the mineral from which it was first isolated
The element Praseodymium was discovered by Carl Auer von Welsbach in year 1885 in Austria. Praseodymium derived its name derived its name from from the Greek praseios didymos meaning 'green twin'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
5×10-7%
1×10-7%
1.7e-07
6e-06
4.5×10-11%
N/A
2×10-7%
1×10-7%
9.8×10-6%
8.6e-06
6×10-11%
N/A

Crystal Structure and Atomic Structure

238 pm
20.448796409629 cm3
N/A
N/A
5.9×103
samarium Spectrum
362.1, 362.1, 2625 pm
π/2, π/2, 2 π/3
R_ 3m
166

Simple Trigonal

samarium Crystal Structure
247 pm
21.221031626506 cm3
N/A
N/A
11.4
praseodymium Spectrum
367.25, 367.25, 1183.54 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

praseodymium 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
62
62
62
150.36
88.36
2, 8, 18, 24, 8, 2
[Xe] 4f6 6s2
4f6 6s2
 2;3
7F0
samarium Shells
59
59
59
140.90765
81.90765
2, 8, 18, 21, 8, 2
[Xe] 4f3 6s2
4f3 6s2
 2;3;4;5
4I9/2
praseodymium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
144Sm, 149Sm, 150Sm, 152Sm, 154Sm.
Naturally occurring stable isotopes:
141Pr.

Chemical Properties: Ionization Energies and electron affinity

3
1.17
50 kJ/mol
544.5, 1070, 2260, 3990 kJ/mol
4
1.13
50 kJ/mol
527, 1020, 2086, 3761, 5551 kJ/mol

Physical Properties

7.353 g/cm3
20.448796409629

 

50 GPa
20 GPa
38 GPa
0.27


 

N/A
412 MPa
441 MPa

 

1.1×106 S/m
9.4×10-7 m Ω
N/A

 

13 W/(m K)
0.0000127 K-1

 

Paramagnetic
N/A
1.11×10-7
1.669×10-8
0.00081618

 

N/A

 

2130 m/s
6.64 g/cm3
21.221031626506

 

37 GPa
15 GPa
29 GPa
0.28


 

N/A
400 MPa
481 MPa

 

1.4×106 S/m
7×10-7 m Ω
N/A

 

13 W/(m K)
6.7×10-6 K-1

 

Paramagnetic
N/A
4.23×10-7
5.9604×10-8
0.0028087

 

N/A

 

2280 m/s

Thermal Properties - Enthalpies and thermodynamics

1072 °C
1803 °C
N/A
N/A

 

8.6 kJ/mol
175 kJ/mol
N/A
931 °C
3290 °C
N/A
N/A

 

6.9 kJ/mol
330 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-19-9
N/A
4.1
1325
N/A
1
N/A
1
1

 

150 °C
N/A
CAS7440-10-0
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A