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36 Noble Gas
Kr

Krypton

RIS 0.006
Velocity
Rank#89
Co-citedXe
Physical properties
Category Noble Gas
Block p-block
State Gas
Config [Ar] 3d10 4s2 4p6
Electronegativity 3.0
Density 0.003733 g/cm³
Melting 115.79 K
Boiling 119.93 K
Ionization 1350.8 kJ/mol
Oxidation +2
Discovered 1898 · William Ramsay, Morris Travers
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
Biosensors · 2025 · 99th percentile for its age
Accounts of Materials Research · 2025 · 99th percentile for its age
Chem · 2025 · 93rd percentile for its age
Top papers, last 5 years
Biosensors · 2025 · 99th percentile for its age
Accounts of Materials Research · 2025 · 99th percentile for its age
Chem · 2025 · 93rd percentile for its age
Newest papers
The Journal of Physical Chemistry Letters · 2026 · 97th percentile for its age
Environmental Science & Technology · 2026 · 97th percentile for its age
Nature Communications · 2026 · 97th percentile for its age

These are the nine that matter most. There are more — browse all of them free.

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Krypton's history

Research intensity over time

Krypton's history

Krypton's research intensity, 1900 → today.

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Advanced visualization features

Krypton's associations

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

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