34 – Selenium, Se
34 – Selenium, Se
34 – Selenium, Se
34 – Selenium, Se
34 – Selenium, Se
Selenium is a non-metal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
Selenium is a non-metal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
Selenium is a non-metal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
Selenium is a non-metal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
Selenium is a non-metal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
1817 by Jöns Berzelius, Sweden.
1817 by Jöns Berzelius, Sweden.
1817 by Jöns Berzelius, Sweden.
1817 by Jöns Berzelius, Sweden.
1817 by Jöns Berzelius, Sweden.
DISCOVERY
DISCOVERY
DISCOVERY
DISCOVERY
DISCOVERY
Ancient Greek, Σελήνη (Selḗnē, 'moon').
Ancient Greek, Σελήνη (Selḗnē, 'moon').
Ancient Greek, Σελήνη (Selḗnē, 'moon').
Ancient Greek, Σελήνη (Selḗnē, 'moon').
Ancient Greek, Σελήνη (Selḗnē, 'moon').
ETYMOLOGY
ETYMOLOGY
ETYMOLOGY
ETYMOLOGY
ETYMOLOGY
Selenium
Selenium
Selenium
Selenium
Selenium
Element
Element
Element
Element
Element
Se
Se
Se
Se
Se
Symbol
Symbol
Symbol
Symbol
Symbol
34
34
34
34
34
Atomic Number
Atomic Number
Atomic Number
Atomic Number
Atomic Number
Non Metal
Non Metal
Non Metal
Non Metal
Non Metal
Classification
Classification
Classification
Classification
Classification
7782-49-2
7782-49-2
7782-49-2
7782-49-2
7782-49-2
CAS Number
CAS Number
CAS Number
CAS Number
CAS Number
Grey
Grey
Grey
Grey
Grey
Elemental Colour
Elemental Colour
Elemental Colour
Elemental Colour
Elemental Colour
1.000'895
1.000'895
1.000'895
1.000'895
1.000'895
Refractive Index
Refractive Index
Refractive Index
Refractive Index
Refractive Index
0.330
0.330
0.330
0.330
0.330
Poisson Ratio
Poisson Ratio
Poisson Ratio
Poisson Ratio
Poisson Ratio
16.385 cm3
16.385 cm3
16.385 cm3
16.385 cm3
16.385 cm3
Molar Volume
Molar Volume
Molar Volume
Molar Volume
Molar Volume
736.00M Pa, 7.263'8k Atm
736.00M Pa, 7.263'8k Atm
736.00M Pa, 7.263'8k Atm
736.00M Pa, 7.263'8k Atm
7.263'8k Atm
Brinell Hardness
Brinell Hardness
Brinell Hardness
Brinell Hardness
Brinell Hardness
2.00
2.00
2.00
2.00
2.00
Mohs Hardness
Mohs Hardness
Mohs Hardness
Mohs Hardness
Mohs Hardness
-
-
-
-
-
Vickers Hardness
Vickers Hardness
Vickers Hardness
Vickers Hardness
Vickers Hardness
3,350 m/s, Mach 9.766'8
3,350 m/s, Mach 9.766'8
3,350 m/s, Mach 9.766'8
3,350 m/s, Mach 9.766'8
3,350 m/s
Speed of Sound
Speed of Sound
Speed of Sound
Speed of Sound
Speed of Sound
8.30G Pa, 81.914'6k Atm
8.30G Pa, 81.914'6k Atm
8.30G Pa, 81.914'6k Atm
8.30G Pa, 81.914'6k Atm
81.914'6k Atm
Bulk Modulus
Bulk Modulus
Bulk Modulus
Bulk Modulus
Bulk Modulus
3.70G Pa, 36.516'2k Atm
3.70G Pa, 36.516'2k Atm
3.70G Pa, 36.516'2k Atm
3.70G Pa, 36.516'2k Atm
36.516'2k Atm
Shear Modulus
Shear Modulus
Shear Modulus
Shear Modulus
Shear Modulus
10.00G Pa, 98.692'3k Atm
10.00G Pa, 98.692'3k Atm
10.00G Pa, 98.692'3k Atm
10.00G Pa, 98.692'3k Atm
98.692'3k Atm
Young Modulus
Young Modulus
Young Modulus
Young Modulus
Young Modulus
Allotropes
Allotropes
Allotropes
Allotropes
Allotropes
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494.15 K, 221.00 °C
494.15 K, 221.00 °C
494.15 K, 221.00 °C
494.15 K, 221.00 °C
221.00 °C
Melting Point
Melting Point
Melting Point
Melting Point
Melting Point
958.15 K, 685.00 °C
958.15 K, 685.00 °C
958.15 K, 685.00 °C
958.15 K, 685.00 °C
685.00 °C
Boiling Point
Boiling Point
Boiling Point
Boiling Point
Boiling Point
-
-
-
-
-
Automatic Ignition
Automatic Ignition
Automatic Ignition
Automatic Ignition
Automatic Ignition
-
-
-
-
-
Flashpoint
Flashpoint
Flashpoint
Flashpoint
Flashpoint
1,766.00 K, 1,492.85 °C
1,766.00 K, 1,492.85 °C
1,766.00 K, 1,492.85 °C
1,766.00 K, 1,492.85 °C
1,492.85 °C
Critical Temperature
Critical Temperature
Critical Temperature
Critical Temperature
Critical Temperature
27.20M Pa, 268 Atm
27.20M Pa, 268 Atm
27.20M Pa, 268 Atm
27.20M Pa, 268 Atm
268 Atm
Critical Pressure
Critical Pressure
Critical Pressure
Critical Pressure
Critical Pressure
0.520'000 W/(m K)
0.520'000 W/(m K)
0.520'000 W/(m K)
0.520'000 W/(m K)
0.520'000 W/(m K)
Thermal Conductivity
Thermal Conductivity
Thermal Conductivity
Thermal Conductivity
Thermal Conductivity
-
-
-
-
-
Thermal Expansion
Thermal Expansion
Thermal Expansion
Thermal Expansion
Thermal Expansion
321.20 J/(kg K)
321.20 J/(kg K)
321.20 J/(kg K)
321.20 J/(kg K)
321.20 J/(kg K)
Specific Heat
Specific Heat
Specific Heat
Specific Heat
Specific Heat
5.400 kJ/mol
5.400 kJ/mol
5.400 kJ/mol
5.400 kJ/mol
5.400 kJ/mol
Heat Fusion
Heat Fusion
Heat Fusion
Heat Fusion
Heat Fusion
26.000 kJ/mol
26.000 kJ/mol
26.000 kJ/mol
26.000 kJ/mol
26.000 kJ/mol
Heat Vaporisation
Heat Vaporisation
Heat Vaporisation
Heat Vaporisation
Heat Vaporisation
-
-
-
-
-
Heat Combustion
Heat Combustion
Heat Combustion
Heat Combustion
Heat Combustion
-
-
-
-
-
Curie Point
Curie Point
Curie Point
Curie Point
Curie Point
-
-
-
-
-
Neel Point
Neel Point
Neel Point
Neel Point
Neel Point
-
-
-
-
-
Adiabatic Index
Adiabatic Index
Adiabatic Index
Adiabatic Index
Adiabatic Index
Solid
Solid
Solid
Solid
Solid
Phase
Phase
Phase
Phase
Phase
-
-
-
-
-
Electrical Type
Electrical Type
Electrical Type
Electrical Type
Electrical Type
-
-
-
-
-
Conductivity
Conductivity
Conductivity
Conductivity
Conductivity
-
-
-
-
-
Resistivity
Resistivity
Resistivity
Resistivity
Resistivity
-
-
-
-
-
Superconducting Point
Superconducting Point
Superconducting Point
Superconducting Point
Superconducting Point
Diamagnetic
Diamagnetic
Diamagnetic
Diamagnetic
Diamagnetic
Magnetic Type
Magnetic Type
Magnetic Type
Magnetic Type
Magnetic Type
-0.000'000'004'0
-0.000'000'004'0
-0.000'000'004'0
-0.000'000'004'0
-0.000'000'004'0
Mass Susceptibility
Mass Susceptibility
Mass Susceptibility
Mass Susceptibility
Mass Susceptibility
-0.000'000'000'316'00
-0.000'000'000'316'00
-0.000'000'000'316'00
-0.000'000'000'316'00
-0.000'000'000'316'00
Molar Susceptibility
Molar Susceptibility
Molar Susceptibility
Molar Susceptibility
Molar Susceptibility
-0.000'019'300'00
-0.000'019'300'00
-0.000'019'300'00
-0.000'019'300'00
-0.000'019'300'00
Volume Susceptibility
Volume Susceptibility
Volume Susceptibility
Volume Susceptibility
Volume Susceptibility
Material Composition
Material Composition
Material Composition
Material Composition
Material Composition
0.000'003 %
0.000'003 %
0.000'003 %
0.000'003 %
0.000'003 %
Universe
Universe
Universe
Universe
Universe
0.001'3 %
0.001'3 %
0.001'3 %
0.001'3 %
0.001'3 %
Meteorites
Meteorites
Meteorites
Meteorites
Meteorites
-
-
-
-
-
Sun
Sun
Sun
Sun
Sun
0.000'005 %
0.000'005 %
0.000'005 %
0.000'005 %
0.000'005 %
Earth Crust
Earth Crust
Earth Crust
Earth Crust
Earth Crust
0.000'000'045 %
0.000'000'045 %
0.000'000'045 %
0.000'000'045 %
0.000'000'045 %
Oceans
Oceans
Oceans
Oceans
Oceans
0.000'005 %
0.000'005 %
0.000'005 %
0.000'005 %
0.000'005 %
Humans
Humans
Humans
Humans
Humans
78.959'388'2
78.959'388'2
78.959'388'2
78.959'388'2
78.959'388'2
Atomic Weight
Atomic Weight
Atomic Weight
Atomic Weight
Atomic Weight
103 pm
103 pm
103 pm
103 pm
103 pm
Atomic Radius
Atomic Radius
Atomic Radius
Atomic Radius
Atomic Radius
116 pm
116 pm
116 pm
116 pm
116 pm
Covalent Radius Single Bond
Covalent Radius Single Bond
Covalent Radius Single Bond
Covalent Radius Single Bond
Covalent Radius Single Bond
107 pm
107 pm
107 pm
107 pm
107 pm
Covalent Radius Double Bond
Covalent Radius Double Bond
Covalent Radius Double Bond
Covalent Radius Double Bond
Covalent Radius Double Bond
102 pm
102 pm
102 pm
102 pm
102 pm
Covalent Radius Triple Bond
Covalent Radius Triple Bond
Covalent Radius Triple Bond
Covalent Radius Triple Bond
Covalent Radius Triple Bond
190 pm
190 pm
190 pm
190 pm
190 pm
Van der Waals Radius
Van der Waals Radius
Van der Waals Radius
Van der Waals Radius
Van der Waals Radius
[Ar]4s23d104p4
[Ar]4s23d104p4
[Ar]4s23d104p4
[Ar]4s23d104p4
[Ar]4s23d104p4
Electron Configuration
Electron Configuration
Electron Configuration
Electron Configuration
Electron Configuration
Hexagonal, Primitive
Hexagonal, Primitive
Hexagonal, Primitive
Hexagonal, Primitive
Hexagonal, Primitive
Crystal Structure
Crystal Structure
Crystal Structure
Crystal Structure
Crystal Structure
4.819'00 g/cm3
4.819'00 g/cm3
4.819'00 g/cm3
4.819'00 g/cm3
4.819'00 g/cm3
Density as Solid
Density as Solid
Density as Solid
Density as Solid
Density as Solid
3.990'00 g/cm3
3.990'00 g/cm3
3.990'00 g/cm3
3.990'00 g/cm3
3.990'00 g/cm3
Density as Liquid
Density as Liquid
Density as Liquid
Density as Liquid
Density as Liquid
-
-
-
-
-
Density as Gas
Density as Gas
Density as Gas
Density as Gas
Density as Gas
P121/c1
P121/c1
P121/c1
P121/c1
P121/c1
Space Group Name
Space Group Name
Space Group Name
Space Group Name
Space Group Name
14
14
14
14
14
Space Group Number
Space Group Number
Space Group Number
Space Group Number
Space Group Number
π/2, 1.584'93 & π/2
π/2, 1.584'93 & π/2
π/2, 1.584'93 & π/2
π/2, 1.584'93 & π/2
π/2, 1.584'93 & π/2
Lattice Angles
Lattice Angles
Lattice Angles
Lattice Angles
Lattice Angles
905.4, 908.3 & 1160.1 pm
905.4, 908.3 & 1160.1 pm
905.4, 908.3 & 1160.1 pm
905.4, 908.3 & 1160.1 pm
905.4, 908.3 & 1160.1 pm
Lattice Constants
Lattice Constants
Lattice Constants
Lattice Constants
Lattice Constants
6
6
6
6
6
Valence
Valence
Valence
Valence
Valence
2.55
2.55
2.55
2.55
2.55
Electronegativity
Electronegativity
Electronegativity
Electronegativity
Electronegativity
194.97 kJ/mol
194.97 kJ/mol
194.97 kJ/mol
194.97 kJ/mol
194.97 kJ/mol
Electron Affinity
Electron Affinity
Electron Affinity
Electron Affinity
Electron Affinity
Ionisation Energy
Ionisation Energy
Ionisation Energy
Ionisation Energy
Ionisation Energy
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Stable
Stable
Stable
Stable
Stable
Half Life
Half Life
Half Life
Half Life
Half Life
Stable
Stable
Stable
Stable
Stable
Lifetime
Lifetime
Lifetime
Lifetime
Lifetime
4p4 = 4, 1, -1, -1/2
4p4 = 4, 1, -1, -1/2
4p4 = 4, 1, -1, -1/2
4p4 = 4, 1, -1, -1/2
4p4 = 4, 1, -1, -1/2
Quantum Numbers
Quantum Numbers
Quantum Numbers
Quantum Numbers
Quantum Numbers
8.300'00 b σs
8.300'00 b σs
8.300'00 b σs
8.300'00 b σs
8.300'00 b σs
Neutron Cross Section
Neutron Cross Section
Neutron Cross Section
Neutron Cross Section
Neutron Cross Section
11.700'00 b σa
11.700'00 b σa
11.700'00 b σa
11.700'00 b σa
11.700'00 b σa
Neutron Mass Absorption
Neutron Mass Absorption
Neutron Mass Absorption
Neutron Mass Absorption
Neutron Mass Absorption
Stable Isotopes
Stable Isotopes
Stable Isotopes
Stable Isotopes
Stable Isotopes
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Unstable Isotopes
Unstable Isotopes
Unstable Isotopes
Unstable Isotopes
Unstable Isotopes
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Isotopes Overview
Isotopes Overview
Isotopes Overview
Isotopes Overview
Isotopes Overview
| Isotope | Stability | Symbol | Type | Protons | Neutrons | Spin | Parity | Mass | Abundance | Mass Measure | Mass Excess | Binding Energy | Dipole Moment | Quadrupole Moment | Halflife in Years | Halflife in Seconds | A01 Decay Probability | A01 Decay Mode | A01 Decay Energy | A01 Decay Daughter | A01 Decay Link | A02 Decay Probability | A02 Decay Mode | A02 Decay Energy | A02 Decay Daughter | A02 Decay Link | A03 Decay Probability | A03 Decay Mode | A03 Decay Energy | A03 Decay Daughter | A03 Decay Link | A04 Decay Probability | A04 Decay Mode | A04 Decay Energy | A04 Decay Daughter | A04 Decay Link | A05 Decay Probability | A05 Decay Mode | A05 Decay Energy | A05 Decay Daughter | A05 Decay Link | A06 Decay Probability | A06 Decay Mode | A06 Decay Energy | A06 Decay Daughter | A06 Decay Link | Y01 Decay Product Yield | Y01 Decay Product Nuclide | Y02 Decay Product Yield | Y02 Decay Product Nuclide | Y03 Decay Product Yield | Y03 Decay Product Nuclide | Y04 Decay Product Yield | Y04 Decay Product Nuclide | Y05 Decay Product Yield | Y05 Decay Product Nuclide | Y06 Decay Product Yield | Y06 Decay Product Nuclide | Y07 Decay Product Yield | Y07 Decay Product Nuclide | Y08 Decay Product Yield | Y08 Decay Product Nuclide | Y09 Decay Product Yield | Y09 Decay Product Nuclide | Y10 Decay Product Yield | Y10 Decay Product Nuclide | Y11 Decay Product Yield | Y11 Decay Product Nuclide | Y12 Decay Product Yield | Y12 Decay Product Nuclide | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Isotope_034_se_65_u | Unstable | ⁶⁵Se | Fermion | 34 | p | 31 | n | 3/2 | -1 | 64.964'660'000'0 | u | ~ 0 | % | ~ 0 | -32.919'000'000'0 | MeV | 8.169'000'000'0 | MeV | - | - | 1.58E-9 | year | 50.000 | milli-seconds ( x⁻³ ) | 100.000'000 | % | β+ | 13,040.000 | keV | ⁶⁵As | ⁶⁵Se > [ 100 % , β+ , 13,040.0 keV ] > ⁶⁵As | β+p | ? | keV | ⁶⁴Ge | ⁶⁵Se > [ , β+p , ? keV ] > ⁶⁴Ge | 100.000'000 | % | ⁶⁵Cu | ? | % | ⁶⁴Ni | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_66_u | Unstable | ⁶⁶Se | Boson | 34 | p | 32 | n | 0 | 1 | 65.955'210'000'0 | u | ~ 0 | % | ~ 0 | -41.722'000'000'0 | MeV | 8.300'8.300'8.300'8.300 | MeV | - | - | 1.05E-9 | year | 33.000 | milli-seconds ( x⁻³ ) | 100.000'000 | % | β+ | 8,759.000 | keV | ⁶⁶As | ⁶⁶Se > [ 100 % , β+ , 8,759.0 keV ] > ⁶⁶As | 100.000'000 | % | ⁶⁶Zn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_67_u | Unstable | ⁶⁷Se | Fermion | 34 | p | 33 | n | 5/2 | -1 | 66.950'090'000'0 | u | ~ 0 | % | ~ 0 | -46.491'000'000'0 | MeV | 8.368'000'000'0 | MeV | - | - | 4.21E-9 | year | 133.000 | milli-seconds ( x⁻³ ) | 100.000'000 | % | β+ | 9,135.000 | keV | ⁶⁷As | ⁶⁷Se > [ 100 % , β+ , 9,135.0 keV ] > ⁶⁷As | β+p | ? | keV | ⁶⁶Ge | ⁶⁷Se > [ , β+p , ? keV ] > ⁶⁶Ge | 100.000'000 | % | ⁶⁷Zn | ? | % | ⁶⁶Zn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_68_u | Unstable | ⁶⁸Se | Boson | 34 | p | 34 | n | 0 | 1 | 67.941'798'000'0 | u | ~ 0 | % | ~ 0 | -54.214'814'000'0 | MeV | 8.477'420'000'0 | MeV | - | - | 1.12E-9 | year | 35.500 | milli-seconds ( x⁻³ ) | 100.000'000 | % | β+ | 3,662.200 | keV | ⁶⁸As | ⁶⁸Se > [ 100 % , β+ , 3,662.2 keV ] > ⁶⁸As | 100.000'000 | % | ⁶⁸Zn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_69_u | Unstable | ⁶⁹Se | Fermion | 34 | p | 35 | n | 1/2 | -1 | 68.939'557'817'0 | u | ~ 0 | % | ~ 0 | -56.301'531'000'0 | MeV | 8.501'777'000'0 | MeV | - | - | 8.68E-7 | year | 27.400 | seconds ( x⁰ ) | 100.000'000 | % | β+ | 5,762.900 | keV | ⁶⁹As | ⁶⁹Se > [ 100 % , β+ , 5,762.9 keV ] > ⁶⁹As | β+p | ? | keV | ⁶⁸Ge | ⁶⁹Se > [ , β+p , ? keV ] > ⁶⁸Ge | 100.000'000 | % | ⁶⁹Ga | ? | % | ⁶⁸Zn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_70_u | Unstable | ⁷⁰Se | Boson | 34 | p | 36 | n | 0 | 1 | 69.933'390'644'0 | u | ~ 0 | % | ~ 0 | -62.046'216'000'0 | MeV | 8.577'695'000'0 | MeV | - | - | 7.83E-5 | year | 2.470 | kilo-seconds ( x³ ) | 100.000'000 | % | β+ | 1,274.700 | keV | ⁷⁰As | ⁷⁰Se > [ 100 % , β+ , 1,274.7 keV ] > ⁷⁰As | 100.000'000 | % | ⁷⁰Ge | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_71_u | Unstable | ⁷¹Se | Fermion | 34 | p | 37 | n | 5/2 | -1 | 70.932'241'822'0 | u | ~ 0 | % | ~ 0 | -63.116'336'000'0 | MeV | 8.585'635'000'0 | MeV | - | - | 9.00E-6 | year | 283.980 | seconds ( x⁰ ) | 100.000'000 | % | β+ | 3,755.800 | keV | ⁷¹As | ⁷¹Se > [ 100 % , β+ , 3,755.8 keV ] > ⁷¹As | 100.000'000 | % | ⁷¹Ga | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_72_u | Unstable | ⁷²Se | Boson | 34 | p | 38 | n | 0 | 1 | 71.927'112'352'0 | u | ~ 0 | % | ~ 0 | -67.894'407'000'0 | MeV | 8.644'854'000'0 | MeV | - | - | 2.31E-2 | year | 730.080 | kilo-seconds ( x³ ) | 100.000'000 | % | ϵ | 335.400 | keV | ⁷²As | ⁷²Se > [ 100 % , ϵ , 335.4 keV ] > ⁷²As | 100.000'000 | % | ⁷²Ge | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_73_u | Unstable | ⁷³Se | Fermion | 34 | p | 39 | n | 9/2 | 1 | 72.926'765'345'0 | u | ~ 0 | % | ~ 0 | -68.217'642'000'0 | MeV | 8.641'425'000'0 | MeV | 0.870'000'000'0 | nm | - | 8.14E-4 | year | 25.700 | kilo-seconds ( x³ ) | 100.000'000 | % | β+ | 1,716.860 | keV | ⁷³As | ⁷³Se > [ 100 % , β+ , 1,716.86 keV ] > ⁷³As | 100.000'000 | % | ⁷³Ge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_74_s | Stable | ⁷⁴Se | Boson | 34 | p | 40 | n | 0 | 1 | 73.922'476'436'0 | u | 0.890'000 | % | 0.657'910'040'3 | -72.212'735'000'0 | MeV | 8.687'708'000'0 | MeV | - | - | - | ? | % | β+ | -834.700 | keV | ⁷⁴Ge | ⁷⁴Se > [ ? % , β+ , -834.7 keV ] > ⁷⁴Ge | ? | % | ⁷⁴Ge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_75_u | Unstable | ⁷⁵Se | Fermion | 34 | p | 41 | n | 5/2 | 1 | 74.922'523'368'0 | u | ~ 0 | % | ~ 0 | -72.169'018'000'0 | MeV | 8.678'907'000'0 | MeV | 0.670'000'000'0 | nm | 1.000'000'000'0 | b | 3.28E-1 | year | 10.349 | mega-seconds ( x⁶ ) | 100.000'000 | % | ϵ | 863.392 | keV | ⁷⁵As | ⁷⁵Se > [ 100 % , ϵ , 863.392 keV ] > ⁷⁵As | 100.000'000 | % | ⁷⁵As | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_76_s | Stable | ⁷⁶Se | Boson | 34 | p | 42 | n | 0 | 1 | 75.919'213'597'0 | u | 9.370'000 | % | 7.113'630'314'0 | -75.252'050'000'0 | MeV | 8.711'478'000'0 | MeV | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_77_s | Stable | ⁷⁷Se | Fermion | 34 | p | 43 | n | 1/2 | -1 | 76.919'914'038'0 | u | 7.630'000 | % | 5.868'989'441'1 | -74.599'594'000'0 | MeV | 8.694'691'000'0 | MeV | 0.535'042'200'0 | nm | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_78_s | Stable | ⁷⁸Se | Boson | 34 | p | 44 | n | 0 | 1 | 77.917'309'090'0 | u | 23.770'000 | % | 18.520'944'370'7 | -77.026'086'000'0 | MeV | 8.717'808'000'0 | MeV | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_79_u | Unstable | ⁷⁹Se | Fermion | 34 | p | 45 | n | 7/2 | 1 | 78.918'499'098'0 | u | ~ 0 | % | ~ 0 | -75.917'602'000'0 | MeV | 8.695'593'000'0 | MeV | 1.018'000'000'0 | nm | 0.800'000'000'0 | b | 2.95E+5 | years | 9.316 | tera-seconds ( x¹² ) | 100.000'000 | % | β- | 150.910 | keV | ⁷⁹Br | ⁷⁹Se > [ 100 % , β- , 150.91 keV ] > ⁷⁹Br | 100.000'000 | % | ⁷⁹Br | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_80_s | Stable | ⁸⁰Se | Boson | 34 | p | 46 | n | 0 | 1 | 79.916'521'271'0 | u | 49.610'000 | % | 39.646'586'202'5 | -77.759'936'000'0 | MeV | 8.710'819'000'0 | MeV | - | - | - | 100.000'000 | % | 2β- | 132.560 | keV | ⁸⁰Kr | ⁸⁰Se > [ 100 % , 2β- , 132.56 keV ] > ⁸⁰Kr | ? | % | ⁸⁰Kr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_81_u | Unstable | ⁸¹Se | Fermion | 34 | p | 47 | n | 1/2 | -1 | 80.917'992'474'0 | u | ~ 0 | % | ~ 0 | -76.389'519'000'0 | MeV | 8.686'005'000'0 | MeV | - | - | 3.51E-5 | year | 1.107 | kilo-seconds ( x³ ) | 100.000'000 | % | β- | 1,585.320 | keV | ⁸¹Br | ⁸¹Se > [ 100 % , β- , 1,585.32 keV ] > ⁸¹Br | 100.000'000 | % | ⁸¹Br | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_82_u | Unstable | ⁸²Se | Boson | 34 | p | 48 | n | 0 | 1 | 81.916'699'401'0 | u | 8.730'000 | % | 7.151'327'857'7 | -77.594'008'000'0 | MeV | 8.693'198'000'0 | MeV | - | - | 9.83E+19 | years | 3,102.112 | yotta-seconds ( x²⁴ ) | 100.000'000 | % | 2β- | 2,995.500 | keV | ⁸²Kr | ⁸²Se > [ 100 % , 2β- , 2,995.5 keV ] > ⁸²Kr | 100.000'000 | % | ⁸²Kr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_83_u | Unstable | ⁸³Se | Fermion | 34 | p | 49 | n | 9/2 | 1 | 82.919'118'473'0 | u | ~ 0 | % | ~ 0 | -75.340'657'000'0 | MeV | 8.658'557'000'0 | MeV | - | - | 4.25E-5 | year | 1.340 | kilo-seconds ( x³ ) | 100.000'000 | % | β- | 3,668.270 | keV | ⁸³Br | ⁸³Se > [ 100 % , β- , 3,668.27 keV ] > ⁸³Br | 100.000'000 | % | ⁸³Kr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_84_u | Unstable | ⁸⁴Se | Boson | 34 | p | 50 | n | 0 | 1 | 83.918'462'354'0 | u | ~ 0 | % | ~ 0 | -75.951'829'000'0 | MeV | 8.658'841'000'0 | MeV | - | - | 6.02E-6 | year | 190.020 | seconds ( x⁰ ) | 100.000'000 | % | β- | 1,847.500 | keV | ⁸⁴Br | ⁸⁴Se > [ 100 % , β- , 1,847.5 keV ] > ⁸⁴Br | 100.000'000 | % | ⁸⁴Kr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_85_u | Unstable | ⁸⁵Se | Fermion | 34 | p | 51 | n | 5/2 | 1 | 84.922'245'053'0 | u | ~ 0 | % | ~ 0 | -72.428'267'000'0 | MeV | 8.610'476'000'0 | MeV | - | - | 1.00E-6 | year | 31.700 | seconds ( x⁰ ) | 100.000'000 | % | β- | 6,182.000 | keV | ⁸⁵Br | ⁸⁵Se > [ 100 % , β- , 6,182.0 keV ] > ⁸⁵Br | 100.000'000 | % | ⁸⁵Rb | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_86_u | Unstable | ⁸⁶Se | Boson | 34 | p | 52 | n | 0 | 1 | 85.924'271'579'0 | u | ~ 0 | % | ~ 0 | -70.540'570'000'0 | MeV | 8.582'256'000'0 | MeV | - | - | 4.85E-7 | year | 15.300 | seconds ( x⁰ ) | 100.000'000 | % | β- | 5,099.000 | keV | ⁸⁶Br | ⁸⁶Se > [ 100 % , β- , 5,099.0 keV ] > ⁸⁶Br | ? | % | ⁸⁶Sr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_87_u | Unstable | ⁸⁷Se | Fermion | 34 | p | 53 | n | 5/2 | 1 | 86.928'521'358'0 | u | ~ 0 | % | ~ 0 | 8.530'882'000'0 | MeV | - | - | - | 1.74E-7 | year | 5.500 | seconds ( x⁰ ) | 100.000'000 | β- | 7,275.000 | keV | ⁸⁷Br | ⁸⁷Se > [ 100 , β- , 7,275.0 keV ] > ⁸⁷Br | β-n | 986.300 | keV | ⁸⁶Br | ⁸⁷Se > [ , β-n , 986.3 keV ] > ⁸⁶Br | 97.000'000 | % | ⁸⁷Sr | ? | % | ⁸⁶Sr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_88_u | Unstable | ⁸⁸Se | Boson | 34 | p | 54 | n | 0 | 1 | 87.931'423'998'0 | u | ~ 0 | % | ~ 0 | -63.878'135'000'0 | MeV | 8.494'935'000'0 | MeV | - | - | 4.85E-8 | year | 1.530 | seconds ( x⁰ ) | 99.000'000 | % | β- | 6,854.000 | keV | ⁸⁸Br | ⁸⁸Se > [ 99 % , β- , 6,854.0 keV ] > ⁸⁸Br | β-n | 1,907.500 | keV | ⁸⁷Br | ⁸⁸Se > [ , β-n , 1,907.5 keV ] > ⁸⁷Br | 92.070'000 | % | ⁸⁸Sr | 7.474'500 | % | ⁸⁷Sr | ? | % | ⁸⁶Sr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_89_u | Unstable | ⁸⁹Se | Fermion | 34 | p | 55 | n | 5/2 | 1 | 88.936'450'000'0 | u | ~ 0 | % | ~ 0 | -59.196'000'000'0 | MeV | 8.438'000'000'0 | MeV | - | - | 1.30E-8 | year | 410.000 | milli-seconds ( x⁻³ ) | 92.000'000 | % | β- | 9,375.000 | keV | ⁸⁹Br | ⁸⁹Se > [ 92 % , β- , 9,375.0 keV ] > ⁸⁹Br | β-n | 3,464.000 | keV | ⁸⁸Br | ⁸⁹Se > [ , β-n , 3,464.0 keV ] > ⁸⁸Br | 79.120'000 | % | ⁸⁹Y | 19.950'000 | % | ⁸⁸Sr | 0.513'240 | % | ⁸⁷Sr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_90_u | Unstable | ⁹⁰Se | Boson | 34 | p | 56 | n | 0 | 1 | 89.939'960'000'0 | u | ~ 0 | % | ~ 0 | -55.927'000'000'0 | MeV | 8.397'000'000'0 | MeV | - | - | 9.51E-9 | year | 300.000 | milli-seconds ( x⁻³ ) | ? | % | β- | 3,693.000 | keV | ⁹⁰Br | ⁹⁰Se > [ ? % , β- , 3,693.0 keV ] > ⁹⁰Br | β-n | 4,573.000 | keV | ⁸⁹Br | ⁹⁰Se > [ , β-n , 4,573.0 keV ] > ⁸⁹Br | ? | % | ⁹⁰Zr | ? | % | ⁸⁹Y | ? | % | ⁸⁸Sr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_91_u | Unstable | ⁹¹Se | Fermion | 34 | p | 57 | n | 1/2 | 1 | 90.945'960'000'0 | u | ~ 0 | % | ~ 0 | -50.338'000'000'0 | MeV | 8.332'000'000'0 | MeV | - | - | 8.56E-9 | year | 270.000 | milli-seconds ( x⁻³ ) | 79.000'000 | % | β- | 11,170.000 | keV | ⁹¹Br | ⁹¹Se > [ 79 % , β- , 11,170.0 keV ] > ⁹¹Br | β-n | 6,211.000 | keV | ⁹⁰Br | ⁹¹Se > [ , β-n , 6,211.0 keV ] > ⁹⁰Br | 63.200'000 | % | ⁹¹Zr | 31.550'000 | % | ⁹⁰Zr | 5.292'000 | % | ⁸⁸Y | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_92_u | Unstable | ⁹²Se | Boson | 34 | p | 58 | n | 0 | 1 | 91.949'920'000'0 | u | ~ 0 | % | ~ 0 | -46.649'000'000'0 | MeV | 8.289'000'000'0 | MeV | - | - | 3.17E-9 | year | 100.000 | milli-seconds ( x⁻³ ) | ? | % | β- | 9,931.000 | keV | ⁹²Br | ⁹²Se > [ ? % , β- , 9,931.0 keV ] > ⁹²Br | ? | % | ⁹²Zr | ? | % | ⁹¹Zr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_93_u | Unstable | ⁹³Se | Fermion | 34 | p | 59 | n | 1/2 | 1 | 92.956'290'000'0 | u | ~ 0 | % | ~ 0 | -40.716'000'000'0 | MeV | 8.223'000'000'0 | MeV | - | - | 1.58E-9 | year | 50.000 | milli-seconds ( x⁻³ ) | ? | % | β- | 12,333.000 | keV | ⁹³Br | ⁹³Se > [ ? % , β- , 12,333.0 keV ] > ⁹³Br | ? | % | ⁹²Zr | ? | % | ⁹¹Zr | ? | % | ⁹³Nb | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Isotope_034_se_94_u | Unstable | ⁹⁴Se | Boson | 34 | p | 60 | n | 0 | 1 | 93.960'490'000'0 | u | ~ 0 | % | ~ 0 | -36.803'000'000'0 | MeV | 8.180'000'000'0 | MeV | - | - | 6.34E-10 | year | 20.000 | milli-seconds ( x⁻³ ) | ? | % | β- | 11,001.000 | keV | ⁹⁴Br | ⁹⁴Se > [ ? % , β- , 11,001.0 keV ] > ⁹⁴Br | ? | % | ⁹²Zr | ? | % | ⁹¹Zr | ? | % | ⁹³Nb | ? | % | ⁹⁴Mo |
