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.

Francium (Fr)

Atomic Number	87
Atomic Mass	223 u
Category	Alkali metal
Electron Config	[Rn] 7s¹
Appearance	metallic, likely silvery
Density (STP)	1870 g/L
Melting Point	300 K
Boiling Point	950 K
Electronegativity	0.79 (Pauling)
Ionization Energy	380 kJ/mol
Atomic Radius	260 pm
Crystal Structure	Body-centered Cubic (predicted)
Discovered By	Marguerite Perey (1939)

Brief Introduction

Francium (Fr) is a highly radioactive alkali metal with extremely short-lived isotopes. It is the second rarest naturally occurring element (after astatine). Key details about Francium (Fr) are as follows:

Uses: No commercial applications due to extreme rarity and radioactivity. Used only in scientific research to study atomic structure and fundamental physics.

Production/Extraction: Occurs naturally in trace amounts (estimated 20-30 grams total in Earth's crust at any time) as a decay product of actinium. Produced synthetically by bombarding radium, thorium, or gold with protons or neutrons.

History: Discovered in 1939 by Marguerite Perey at the Curie Institute in Paris, France. She isolated it from the decay chain of actinium. Named after France.

Health Effects & Safety: Extremely radioactive and dangerous. As the most electropositive element, it reacts violently with water. Would accumulate in bone if ingested. Half-life of the most stable isotope (Fr-223) is only 22 minutes.

Price/Market: Not commercially traded. Its value is purely scientific, and it is only produced in minute quantities for research purposes.

Properties: Highly radioactive, extremely unstable, highly reactive alkali metal, predicted to be solid at room temperature, low melting point (estimated 27°C), and exhibits metallic bonding.

← Radon (Rn) · Radium (Ra) →

Periodic Table