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.

Lutetium (Lu)

Atomic Number	71
Atomic Mass	174.96681 u
Category	Lanthanide
Electron Config	[Xe] 4f¹⁴ 5d¹ 6s²
Appearance	silvery white
Density (STP)	9841 g/L
Melting Point	1925 K
Boiling Point	3675 K
Electronegativity	1.27 (Pauling)
Ionization Energy	523.5 kJ/mol
Atomic Radius	175 pm
Crystal Structure	Simple Hexagonal
Discovered By	Georges Urbain (1907)

Brief Introduction

Lutetium (Lu) is a silvery-white rare earth metal that is the hardest and densest of the lanthanides. It is the last element in the lanthanide series. Key details about Lutetium (Lu) are as follows:

Uses: Used in petroleum cracking catalysts, positron emission tomography (PET) detectors (lutetium oxyorthosilicate scintillators), high refractive index glass, and in some specialized alloys. Limited applications due to rarity and cost.

Production/Extraction: Extracted from monazite and bastnäsite ores. Rarest and most expensive naturally occurring rare earth element. China is the primary producer. Production is very limited.

History: Discovered independently in 1907 by Georges Urbain in France, Carl Auer von Welsbach in Austria, and Charles James in the United States. Named after Lutetia, the ancient name for Paris.

Health Effects & Safety: Low toxicity with limited data. No known biological role. Lutetium compounds should be handled with standard precautions. Radioactive Lu-177 is used in cancer therapy.

Price/Market: Most expensive naturally occurring rare earth element due to extreme rarity. Very limited commercial market. Niche applications in medical imaging and cancer treatment.

Properties: Hardest and densest lanthanide, exhibits +3 oxidation state exclusively, last element in lanthanide series, paramagnetic, and has two naturally occurring isotopes (one slightly radioactive with very long half-life).

← Ytterbium (Yb) · Hafnium (Hf) →

Periodic Table