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97 Actinide
Bk

Berkelium

RIS 0.000
Velocity
Rank#103
Co-citedTs
Physical properties
Category Actinide
Block f-block
State Solid
Config [Rn] 5f9 7s2
Electronegativity 1.3
Density 14.79 g/cm³
Melting 1259.0 K
Boiling 2900.0 K
Ionization 601.0 kJ/mol
Oxidation +3, +4
Discovered 1949 · Stanley G. Thompson, Albert Ghiorso, Glenn T. Seaborg
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
Science · 2025 · 96th percentile for its age
ACS Environmental Au · 2024 · 75th percentile for its age
Nature Communications · 2023 · 76th percentile for its age
Top papers, last 5 years
Science · 2025 · 96th percentile for its age
ACS Environmental Au · 2024 · 75th percentile for its age
Nature Communications · 2023 · 76th percentile for its age
Newest papers
Angewandte Chemie · 2026 · 32nd percentile for its age
Angewandte Chemie International Edition · 2026 · 32nd percentile for its age
EPJ Web of Conferences · 2026 · 32nd percentile for its age

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Berkelium's history

Research intensity over time

Berkelium's history

Berkelium's research intensity, 1900 → today.

See how it got here — free account.
Advanced visualization features

Berkelium's associations

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

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