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Technetium-99

Technetium-99 (99Tc) is an isotope of technetium that decays with a half-life of 211,000 years to stable ruthenium-99, emitting beta particles, but effectively no gamma rays. It is the most significant long-lived fission product of uranium fission, and the largest single contributor to the long-lived radioactivity of nuclear waste. Technetium-99 has a…

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Beta decay
0.2975
Decay mode
Decay energy (MeV)
Decay products
99Ru
Excess energy
−87327.9±0.9 keV
Half-life (t1/2)
211100±1200 years
Names
technetium-99

Topics to explore

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Overview

Radiation

Role in nuclear waste

Releases

In the environment

Transmutation of technetium to stable ruthenium-100

Advanced semantic analysis

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Map overview Semantic statistics

Technetium-99

Nodes52
Edges51
Triples45
Avg. degree1.96
Density0.038462
Components1

How this topic connects Entity context

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Technetium-99

Top relations

related to Separation of technetium-99 · 9
Technetium-99 → In, It, Lab, NDTB-1, Notre Dame, Notre Dame Thorium Borate-1, Once, Several, University
related to Transmutation of technetium to stable ruthenium-100 · 8
Technetium-99 → An, CERN, Given, NIIAR, Ru, Tc, Technetium, This
related to In the environment · 6
Technetium-99 → Disposal, For, Hence, However, Many, The
related to Releases · 6
Technetium-99 → An, In, Irish Sea, Sellafield, TBq, The
related to Role in nuclear waste · 3
Technetium-99 → Due, Measured, The
Beta decay · 1
Technetium-99 → 0.2975
Decay mode · 1
Technetium-99 → Decay energy (MeV)
Decay products · 1
Technetium-99 → 99Ru
Excess energy · 1
Technetium-99 → −87327.9±0.9 keV
Half-life (t1/2) · 1
Technetium-99 → 211100±1200 years

Important terminology Word statistics

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Important terminology

nuclear half-life technetium waste transmutation fission years beta product environment stable radioactive long decays radiation decay tbq uranium technetium-99m 99tc

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Technetium-99Beta decay0.29751.00infobox
Technetium-99Decay modeDecay energy (MeV)1.00infobox
Technetium-99Decay products99Ru1.00infobox
Technetium-99Excess energy−87327.9±0.9 keV1.00infobox
Technetium-99Half-life (t1/2)211100±1200 years1.00infobox
Technetium-99Namestechnetium-991.00infobox
Technetium-99Natural abundancetrace1.00infobox
Technetium-99Neutrons (N)561.00infobox
Technetium-99Nuclear binding energy8613.610±0.009 keV1.00infobox
Technetium-99Protons .mw-parser-output .nobold{font-weight:normal}(Z)431.00infobox
Technetium-99Spin9/2+1.00infobox
Technetium-99Symbol99Tc1.00infobox

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