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2 Noble Gas
He

Helium

RIS 0.023
Velocity
Rank#67
Co-citedNe
Physical properties
Category Noble Gas
Block s-block
State Gas
Config 1s2
Density 0.0001785 g/cm³
Melting 0.95 K
Boiling 4.22 K
Ionization 2372.3 kJ/mol
Oxidation 0
Discovered 1868 · Pierre Janssen, Joseph Norman Lockyer
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
Journal of Cosmology and Astroparticle Physics · 2025 · 100th percentile for its age
Figshare · 2025 · 100th percentile for its age
Zenodo (CERN European Organization for Nuclear Research) · 2026 · 100th percentile for its age
Top papers, last 5 years
Journal of Cosmology and Astroparticle Physics · 2025 · 100th percentile for its age
Figshare · 2025 · 100th percentile for its age
Zenodo (CERN European Organization for Nuclear Research) · 2026 · 100th percentile for its age
Newest papers
Zenodo (CERN European Organization for Nuclear Research) · 2026 · 100th percentile for its age
Nature · 2026 · 100th percentile for its age
Monthly Notices of the Royal Astronomical Society · 2026 · 100th percentile for its age

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Helium's history

Research intensity over time

Helium's history

Helium's research intensity, 1900 → today.

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Advanced visualization features

Helium's associations

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

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