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95 Actinide
Am

Americium

RIS 0.004
Velocity
Rank#92
Co-citedCm
Physical properties
Category Actinide
Block f-block
State Solid
Config [Rn] 5f7 7s2
Electronegativity 1.3
Density 13.69 g/cm³
Melting 1449.0 K
Boiling 2880.0 K
Ionization 578.0 kJ/mol
Oxidation +2, +3, +4, +5, +6, +7
Discovered 1944 · Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso
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
ACS Applied Materials & Interfaces · 2025 · 89th percentile for its age
Journal of the American Chemical Society · 2025 · 95th percentile for its age
Advanced Science · 2025 · 96th percentile for its age
Top papers, last 5 years
ACS Applied Materials & Interfaces · 2025 · 89th percentile for its age
Journal of the American Chemical Society · 2025 · 95th percentile for its age
Advanced Science · 2025 · 96th percentile for its age
Newest papers
Chemical Communications · 2026 · 95th percentile for its age
Radiation Physics and Chemistry · 2026 · 92nd percentile for its age
Physical Chemistry Chemical Physics · 2026 · 87th percentile for its age

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Americium's history

Research intensity over time

Americium's history

Americium's research intensity, 1900 → today.

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Advanced visualization features

Americium's associations

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

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