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20 Alkali Alkaline Earth
Ca

Calcium

RIS 0.144
Velocity
Rank#14
Co-citedP
Physical properties
Category Alkaline Earth Metal
Block s-block
State Solid
Config [Ar] 4s2
Electronegativity 1.0
Density 1.55 g/cm³
Melting 1115.0 K
Boiling 1757.0 K
Ionization 589.8 kJ/mol
Oxidation +1, +2
Discovered 1808 · Humphry Davy
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
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Redox Biology · 2025 · 100th percentile for its age
Top papers, last 5 years
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Redox Biology · 2025 · 100th percentile for its age
Newest papers
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Archivos Latinoamericanos de Nutrición · 2026 · 100th percentile for its age
Journal of Sol-Gel Science and Technology · 2026 · 100th percentile for its age

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Calcium's history

Research intensity over time

Calcium's history

Calcium's research intensity, 1900 → today.

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Advanced visualization features

Calcium's associations

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

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