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101 Actinide
Md

Mendelevium

RIS 0.000
Velocity
Rank#117
Co-citedFm
Physical properties
Category Actinide
Block f-block
State Solid
Config [Rn] 5f13 7s2
Electronegativity 1.3
Density 10.3 g/cm³
Melting 1100.0 K
Ionization 635.0 kJ/mol
Oxidation +2, +3
Discovered 1955 · Albert Ghiorso, Bernard G. Harvey, Gregory R. Choppin, Stanley G. Thompson, 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
Elements · 2019 · 96th percentile for its age
Journal of Quantitative Spectroscopy and Radiative Transfer · 2020 · 48th percentile for its age
Journal of Energy Conservation · 2019 · 79th percentile for its age
Top papers, last 5 years
Radiochimica Acta · 2022 · 28th percentile for its age
Oxford English Dictionary · 2023 · 14th percentile for its age
Nuclear Physics and Atomic Energy · 2025 · 26th percentile for its age
Newest papers
Nuclear Physics and Atomic Energy · 2025 · 26th percentile for its age
ChemRxiv · 2025 · 26th percentile for its age
Oxford English Dictionary · 2023 · 14th percentile for its age

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Mendelevium's history

Research intensity over time

Mendelevium's history

Mendelevium's research intensity, 1900 → today.

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Advanced visualization features

Mendelevium's associations

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

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