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.

Cesium (Cs)

Atomic Number	55
Atomic Mass	132.905451966 u
Category	Alkali metal
Electron Config	[Xe] 6s¹
Appearance	silvery gold
Density (STP)	1879 g/L
Melting Point	301.7 K
Boiling Point	944 K
Electronegativity	0.79 (Pauling)
Ionization Energy	375.7 kJ/mol
Atomic Radius	260 pm
Crystal Structure	Body-centered Cubic
Discovered By	Robert Bunsen (1860)

Brief Introduction

Cesium (Cs) is a soft, silvery-gold alkali metal that is liquid near room temperature and extremely reactive. It is the most electropositive and alkaline element. Key details about Cesium (Cs) are as follows:

Uses: Used in atomic clocks (Cs-133 defines the second in the International System of Units), photoelectric cells, catalysts, drilling fluids (cesium formate for high-pressure wells), and in specialized glass production. Radioactive Cs-137 is used in medical equipment and industrial gauges.

Production/Extraction: Extracted from pollucite ore through acid digestion and various chemical processes. Canada, Zimbabwe, and Namibia have major deposits. Production is limited and mainly serves niche applications.

History: Discovered in 1860 by Robert Bunsen and Gustav Kirchhoff through spectroscopy of mineral water from Germany. First element discovered by spectroscopy. Named from Latin "caesius" (sky-blue) due to bright blue spectral lines.

Health Effects & Safety: Violently reactive with water and air (ignites spontaneously and can explode). Must be stored under inert atmosphere or in sealed ampules. Cesium ions can mimic potassium in biological systems. Radioactive Cs-137 (from nuclear fission/accidents) is extremely hazardous as it mimics potassium and spreads throughout the body.

Price/Market: Expensive due to limited production and specialized applications. Research and atomic clock applications drive small-scale demand. Limited commercial market.

Properties: Lowest melting point of all alkali metals (28.5°C, can be liquid on warm days), most reactive alkali metal (ignites spontaneously in air, reacts explosively with water), golden color, very soft, lowest ionization energy of all elements, exhibits +1 oxidation state exclusively, and characteristic blue flame color.

← Xenon (Xe) · Barium (Ba) →

Periodic Table