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.

Actinium (Ac)

Atomic Number	89
Atomic Mass	227 u
Category	Actinide
Electron Config	[Rn] 6d¹ 7s²
Appearance	silvery-white metallic
Density (STP)	10070 g/L
Melting Point	1500 K
Boiling Point	3500 K
Electronegativity	1.1 (Pauling)
Ionization Energy	499 kJ/mol
Atomic Radius	195 pm
Crystal Structure	Face-centered Cubic
Discovered By	Friedrich Oskar Giesel (1899)

Brief Introduction

Actinium (Ac) is a highly radioactive, silvery-white metallic element. It is extremely rare and is the first element in the actinide series. Key details about Actinium (Ac) are as follows:

Uses: Primarily used in nuclear medicine research (Actinium-225) for targeted alpha-particle therapy to treat cancer. Also used as a neutron source in some industrial applications.

Production/Extraction: Occurs naturally in trace amounts as a decay product of uranium. Produced synthetically by bombarding radium with neutrons in nuclear reactors or by irradiating thorium.

History: Discovered in 1899 by André-Louis Debierne, a student of Marie Curie, in residues of pitchblende. Named from Greek "aktis" (ray) due to its radioactivity.

Health Effects & Safety: Extremely radiotoxic. Emits alpha, beta, and gamma radiation. Accumulates in bones, causing severe damage to bone marrow and increasing cancer risk. Requires strict handling protocols.

Price/Market: Not commercially traded openly due to extreme toxicity and security risks. Sold only to licensed facilities for industrial/scientific use.

Properties: Radioactive, silvery metallic appearance, glows faintly blue in the dark, highly reactive, reacts with water, melting point around 1050°C.

← Radium (Ra) · Thorium (Th) →

Periodic Table