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Periodic Table Element Comparison: Compare Elements - Tellurium vs Selenium

Compare Tellurium and Selenium

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

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1

2

3

4

5

6

57 - 71
La - Lu

7

2
8
18
32
18
8
1

2
8
18
32
18
8
2

89 - 103
Ac - Lr

2
8
18
32
32
10
2

2
8
18
32
32
11
2

2
8
18
32
32
12
2

2
8
18
32
32
13
2

2
8
18
32
32
14
2

2
8
18
32
32
15
2

2
8
18
32
32
16
2

2
8
18
32
32
17
2

2
8
18
32
32
18
2

2
8
18
32
32
18
3

2
8
18
32
32
18
4

2
8
18
32
32
18
5

2
8
18
32
32
18
6

2
8
18
32
32
18
7

2
8
18
32
32
18
8

2
8
18
32
18
9
2

2
8
18
32
18
10
2

2
8
18
32
20
9
2

2
8
18
32
21
9
2

2
8
18
32
22
9
2

2
8
18
32
24
8
2

2
8
18
32
25
8
2

2
8
18
32
25
9
2

2
8
18
32
27
8
2

2
8
18
32
28
8
2

2
8
18
32
29
8
2

2
8
18
32
30
8
2

2
8
18
32
31
8
2

2
8
18
32
32
8
2

2
8
18
32
32
8
3

tellurium

tellurium Shell Structure

52 Te Tellurium

selenium

selenium Shell Structure

34 Se Selenium

Periodic Table Element Comparison

Facts

Name
Atomic Number
Atomic Symbol
Atomic Weight
Phase
Color
Classification
Group in Periodic Table
Group Name
Period in Periodic Table
Block in Periodic Table
Electronic Configuration
Melting Point
Boiling Point
Electronic Shell Structure
CAS Number
Neighborhood Elements

Tellurium
52
Te
127.6
Solid
Silver
metalloid
16
oxygen family
5
p
[Kr] 4d10 5s2 5p4
449.51 °C
988 °C
2, 8, 18, 18, 6
CAS13494-80-9
Neighborhood Elements of Tellurium

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 Tellurium was discovered by Franz-Joseph Müller von Reichenstein in year 1783 in Romania. Tellurium derived its name from from Latin tellus, meaning 'earth'

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 %)

Abundance in Universe
Abundance in Sun
Abundance in Meteorites
Abundance in Earth's Crust
Abundance in Oceans
Abundance in Humans

9×10-7%
N/A
2.1e-06
9.9×10-8%
N/A
N/A

3×10-6%
N/A
1.3e-05
5×10-6%
4.5×10-8%
5×10-6%

Crystal Structure and Atomic Structure

Atomic Radius
Atomic Volume
Covalent Radius
Van der Waals Radius
Neutron Cross Section
Atomic Spectrum
Lattice Constant
Lattice Angle
Space Group Name
Space Group Number
Crystal Structure

123 pm
20.448717948718 cm³
135 pm
206 pm
5.4

445.72, 445.72, 592.9 pm
π/2, π/2, 2 π/3
P3121
152
Simple Trigonal

103 pm
16.385142145673 cm³
116 pm
190 pm
11.7

905.4, 908.3, 1160.1 pm
π/2, 1.58493, π/2
P121/c1
14
Simple Monoclinic

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

52
52
52
127.6
75.6
2, 8, 18, 18, 6
[Kr] 4d10 5s2 5p4
5s2 5p4
-2;-1 1;2;3;4;5;6
³P₂

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

Isotopes - Nuclear Properties

Isotopes

Naturally occurring stable isotopes: 120Te, 122Te, 124Te, 125Te, 126Te.

Naturally occurring stable isotopes: 74Se, 76Se, 77Se, 78Se, 80Se.

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency
Electronegativity
ElectronAffinity
Ionization Energies

6
2.1
190.2 kJ/mol
869.3, 1790, 2698, 3610, 5668, 6820, 1.32×104 kJ/mol

6
2.55
195 kJ/mol
941, 2045, 2973.7, 4144, 6590, 7880, 14990 kJ/mol

Physical Properties

Density
Molar Volume
Elastic Properties
Young Modulus
Shear Modulus
Bulk Modulus
Poisson Ratio
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness
Vickers Hardness
Brinell Hardness
Electrical Properties
Electrical Conductivity
Resistivity
Superconducting Point
Heat and Conduction Properties
Thermal Conductivity
Thermal Expansion
Magnetic Properties
Magnetic Type
Curie Point
Mass Magnetic Susceptibility
Molar Magnetic Susceptibility
Volume Magnetic Susceptibility
Optical Properties
Refractive Index
Acoustic Properties
Speed of Sound

6.24 g/cm3
20.448717948718

43 GPa
16 GPa
65 GPa
N/A

2.25 MPa
N/A
180 MPa

1×104 S/m
0.0001 m Ω
N/A

3 W/(m K)
N/A

Diamagnetic
N/A
-3.9×10-9
-4.98×10-10
-2.43e-05

1.000991

2610 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

Melting Point
Boiling Point
Critical Temperature
Superconducting Point
Enthalpies
Heat of Fusion
Heat of Vaporization
Heat of Combustion

449.51 °C
988 °C
N/A
N/A

17.5 kJ/mol
48 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

CAS Number
RTECS Number
DOT Hazard Class
DOT Numbers
EU Number
NFPA Fire Rating
NFPA Hazards
NFPA Health Rating
NFPA Reactivity Rating
More
AutoIgnition Point
Flashpoint

CAS13494-80-9
RTECSWY2625000
6.1
2811
N/A
0
N/A
2
0

340 °C
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

Compare With Other Elements

Compare Tellurium with other Group 16 elements

Tellurium vs Oxygen

Tellurium vs Sulfur

Tellurium vs Selenium

Tellurium vs Polonium

Tellurium vs Livermorium

Compare Tellurium with other metalloid

Tellurium vs Boron

Tellurium vs Silicon

Tellurium vs Germanium

Tellurium vs Arsenic

Tellurium vs Antimony

Tellurium vs Polonium

Compare Selenium with other Group 16 elements

Selenium vs Oxygen

Selenium vs Sulfur

Selenium vs Tellurium

Selenium vs Polonium

Selenium vs Livermorium

Compare Selenium with other other nonmetal

Selenium vs Hydrogen

Selenium vs Carbon

Selenium vs Nitrogen

Selenium vs Oxygen

Selenium vs Phosphorus

Selenium vs Sulfur