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Periodic Table Element Comparison: Compare Elements - Uranium vs Selenium

Compare Uranium and Selenium

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

Facts

Uranium
92
U
238.02891
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f3 6d1 7s2
1135 °C
3927 °C
2, 8, 18, 32, 21, 9, 2
CAS7440-61-1
Neighborhood Elements of Uranium
Selenium
34
Se
78.96
Solid
Gray
other nonmetal
16
oxygen family 
4
p
[Ar] 3d10 4s2 4p4
221 °C
685 °C
2, 8, 18, 6
CAS7782-49-2
Neighborhood Elements of Selenium

History

History
The element Uranium was discovered by Martin Heinrich Klaproth in year 1789 in Germany. Uranium derived its name from from Uranus, the seventh planet in the Solar System
The element Selenium was discovered by Jöns Jakob Berzelius in year 1817 in Sweden. Selenium derived its name derived its name from from the Greek selene, meaning 'moon'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
2×10-8%
1×10-7%
9.8×10-7%
1.8e-06
3.3×10-7%
1×10-7%
3×10-6%
N/A
1.3e-05
5×10-6%
4.5×10-8%
5×10-6%

Crystal Structure and Atomic Structure

175 pm
12.494955905512 cm3
N/A
186 pm
7.57
uranium Spectrum
285.37, 586.95, 495.48 pm
π/2, π/2, π/2
Cmcm
63

Base Centered Orthorhombic

uranium Crystal Structure
103 pm
16.385142145673 cm3
116 pm
190 pm
11.7
selenium Spectrum
905.4, 908.3, 1160.1 pm
π/2, 1.58493, π/2
P121/c1
14

Simple Monoclinic

selenium 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
92
92
92
238.02891
146.02891
2, 8, 18, 32, 21, 9, 2
[Rn] 5f3 6d1 7s2
5f3 6d1 7s2
 1;2;3;4;5;6
5L6
uranium Shells
34
34
34
78.96
44.96
2, 8, 18, 6
[Ar] 3d10 4s2 4p4
4s2 4p4
-2;-1  1;2;3;4;5;6
3P2
selenium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
74Se, 76Se, 77Se, 78Se, 80Se.

Chemical Properties: Ionization Energies and electron affinity

6
1.38
N/A
597.6, 1420 kJ/mol
6
2.55
195 kJ/mol
941, 2045, 2973.7, 4144, 6590, 7880, 14990 kJ/mol

Physical Properties

19.05 g/cm3
12.494955905512

 

208 GPa
111 GPa
100 GPa
0.23


 

6 MPa
1960 MPa
2.4×103 MPa

 

3.6×106 S/m
2.8×10-7 m Ω
0.68

 

27 W/(m K)
0.0000139 K-1

 

Paramagnetic
N/A
2.16×10-8
5.14×10-9
0.000411

 

N/A

 

3155 m/s
4.819 g/cm3
16.385142145673

 

10 GPa
3.7 GPa
8.3 GPa
0.33


 

2 MPa
N/A
736 MPa

 

N/A
N/A
N/A

 

0.52 W/(m K)
N/A

 

Diamagnetic
N/A
-4×10-9
-3.16×10-10
-1.93e-05

 

1.000895

 

3350 m/s

Thermal Properties - Enthalpies and thermodynamics

1135 °C
3927 °C
N/A
0.68

 

14 kJ/mol
420 kJ/mol
N/A
221 °C
685 °C
1766 K
N/A

 

5.4 kJ/mol
26 kJ/mol
{"N/A", "N/A", "N/A"} J/(kg K)

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-61-1
RTECSYR3490000
7
2979
EU231-170-6
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7782-49-2
{N/A, RTECSVS7700000, N/A}
{N/A, 6.1, N/A}
"N/A", {2658}, "N/A"
{N/A, N/A, N/A}
{N/A, 0, N/A}
N/ A, N/ A, N/ A
{N/A, 2, N/A}
{N/A, 0, N/A}

 

N/A
N/A