What is the Interactive Periodic Table?

The Interactive Periodic Table is a free, modern web application that displays all 118 elements with detailed properties, 3D Bohr model visualizations, crystal structure renderings, and text-to-speech pronunciation. It works on desktop, tablet, and mobile devices.

What information is available for each element?

Each element page includes atomic number, atomic mass, electron configuration, physical properties (density, melting and boiling points, state of matter), chemical properties (electronegativity, ionization energy, electron affinity), an interactive 3D Bohr model, 3D crystal structure, and an AI-generated educational summary.

Can I use this periodic table for teaching?

Yes. The Interactive Periodic Table includes a full-screen mode designed for projectors and classroom presentations. All content is educational and completely free to use without registration.

Does it work on mobile devices?

Yes. The web app is fully responsive and also available as native iOS and Android apps that can be downloaded from the app stores.

What are the 3D visualizations?

Each element features an interactive 3D Bohr model showing electron shells orbiting the nucleus, and a 3D crystal structure rendering showing the element's atomic arrangement. Both are powered by Three.js and React Three Fiber.

Is this periodic table free?

Yes, the Interactive Periodic Table is completely free with no registration, no ads, and no data collection required.

How many elements are included?

All 118 confirmed elements from Hydrogen (H, atomic number 1) through Oganesson (Og, atomic number 118) are included with full data and visualizations.

Can I hear how element names are pronounced?

Yes. The text-to-speech feature allows you to hear the correct pronunciation of any element name. This works on both the web version and native mobile apps.

Calcium (Ca)

Atomic Number	20
Atomic Mass	40.0784 u
Category	Alkaline earth metal
Electron Config	[Ar] 4s²
Appearance	silvery white
Density (STP)	1550 g/L
Melting Point	1115 K
Boiling Point	1757 K
Electronegativity	1 (Pauling)
Ionization Energy	589.8 kJ/mol
Atomic Radius	180 pm
Crystal Structure	Face-centered Cubic
Discovered By	Humphry Davy (1808)

Brief Introduction

Calcium (Ca) is a soft, silvery-white alkaline earth metal that is highly reactive and the fifth most abundant element in Earth's crust. It is essential for life, particularly in bones and teeth. Key details about Calcium (Ca) are as follows:

Uses: Used in steel and aluminum production (as a reducing agent and deoxidizer), in cement and construction materials (as calcium carbonate and oxide), as a getter in vacuum tubes, and in calcium supplements. Compounds like quicklime (CaO) are widely used industrially.

Production/Extraction: Produced by electrolysis of molten calcium chloride. Calcium compounds are abundant (limestone, gypsum, fluorite). Metallic calcium is less commonly needed than its compounds. China is the major producer.

History: Compounds used since ancient times (lime, gypsum, marble). Recognized as an element by Humphry Davy, who first isolated it in 1808 through electrolysis of lime (CaO) and mercury oxide. Named from Latin "calx" (lime).

Health Effects & Safety: Metallic calcium reacts with water. Calcium ions (Ca²⁺) are essential for bone and teeth structure, muscle contraction, nerve transmission, blood clotting, and cell signaling. Deficiency causes osteoporosis and other health issues; excessive intake can cause kidney stones and vascular calcification.

Price/Market: Metallic calcium has moderate pricing; calcium compounds (limestone, gypsum) are very inexpensive and abundant. Construction and steel industries drive demand.

Properties: Relatively soft, reactive with water (but less vigorously than alkali metals), forms protective oxide layer, burns with red-orange flame color, and good electrical conductor for a metal.

← Potassium (K) · Scandium (Sc) →

Periodic Table