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.

Iridium (Ir)

Atomic Number	77
Atomic Mass	192.2173 u
Category	Transition metal
Electron Config	[Xe] 4f¹⁴ 5d⁷ 6s²
Appearance	silvery white
Density (STP)	22560 g/L
Melting Point	2719 K
Boiling Point	4403 K
Electronegativity	2.2 (Pauling)
Ionization Energy	880 kJ/mol
Atomic Radius	135 pm
Crystal Structure	Face-centered Cubic
Discovered By	Smithson Tennant (1803)

Brief Introduction

Iridium (Ir) is a very hard, brittle, silvery-white transition metal of the platinum group. It is the second-densest element (after osmium) and is the most corrosion-resistant metal known. Key details about Iridium (Ir) are as follows:

Uses: Used in spark plugs (for aviation and industrial engines), crucibles for high-temperature crystal growth, electrical contacts, and as a hardening agent for platinum alloys. The interplay of high melting point and stability makes it ideal for extreme environments.

Production/Extraction: Produced as a byproduct of platinum and nickel mining. South Africa and Russia are the main producers. Annual production is extremely low (only a few tonnes).

History: Discovered in 1803 by Smithson Tennant in London, England, in the same residue where he found osmium. Named after Iris, the Greek goddess of the rainbow, due to the striking colors of its salts.

Health Effects & Safety: Metallic iridium is chemically inert and generally safe. Iridium compounds should be handled with care, although they are rarely encountered. No known biological role.

Price/Market: Extremely expensive due to its rarity and difficulty in extraction. Price is often higher than gold or platinum, subject to market volatility and industrial demand.

Properties: Extremely dense (22.56 g/cm³), very high melting point (2446°C), most corrosion-resistant metal (unaffected by acids, even aqua regia), hard and brittle (difficult to machine), and exhibits +3 and +4 oxidation states.

← Osmium (Os) · Platinum (Pt) →

Periodic Table