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43 Transition Metal
Tc

Technetium

RIS 0.009
Velocity
Rank#85
Co-citedRe
Physical properties
Category Transition Metal
Block d-block
State Solid
Config [Kr] 4d5 5s2
Electronegativity 1.9
Density 11.5 g/cm³
Melting 2430.0 K
Boiling 4538.0 K
Ionization 702.0 kJ/mol
Oxidation +1, +2, +3, +4, +5, +6, +7
Discovered 1937 · Carlo Perrier, Emilio Segre
10-year trends

Research trends from the past decade for this element.

Research trends from the past decade: publication rate, citation momentum, emerging applications. A bird's-eye view of how the field has been evolving.

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Top papers of all time
AAPS PharmSciTech · 2026 · 100th percentile for its age
European Heart Journal · 2025 · 99th percentile for its age
Chemical Engineering Journal Advances · 2025 · 96th percentile for its age
Top papers, last 5 years
AAPS PharmSciTech · 2026 · 100th percentile for its age
European Heart Journal · 2025 · 99th percentile for its age
Chemical Engineering Journal Advances · 2025 · 96th percentile for its age
Newest papers
AAPS PharmSciTech · 2026 · 100th percentile for its age
Journal of Nuclear Cardiology · 2026 · 99th percentile for its age
Drug Delivery and Translational Research · 2026 · 98th percentile for its age

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Technetium's history

Research intensity over time

Technetium's history

Technetium's research intensity, 1900 → today.

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Advanced visualization features

Technetium's associations

These shapes are citation clusters: groups of papers that cite each other. They show why Technetium is moving, not just that it is.

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