Beyond Atomic Numbers - Every Element Has a Story
114.82
13
5
P Block
Post-Transition Metal
Indium was discovered in 1863 by German chemists Ferdinand Reich and Hieronymous Richter. It was identified through a brilliant indigo-blue line in its emission spectrum, which inspired its name.
Indium is extremely rare in Earth's crust and is mainly obtained as a by-product during the refining of zinc ores.
Group 13 | Period 5 | P Block | Post-Transition Metal
Indium is widely used in touchscreens, LCD displays, LEDs, semiconductors, solar panels and special low-melting alloys. Although most people never see it, indium plays an essential role in modern electronic devices.
Tin, Gallium, Zinc and Silicon
Indium is relatively stable in air but reacts slowly with acids. Because it is rare, efficient recycling is important to conserve supplies.
Electronic Configuration: [Kr] 4d¹⁰ 5s² 5p¹
Indium forms transparent conductive coatings when combined with tin oxide. These coatings conduct electricity while allowing light to pass through, making touchscreens and LCD displays possible.
Pure indium is so soft that it can be cut with a knife and even leaves marks when bent because it produces a distinctive "cry" or cracking sound.
Almost every smartphone, tablet and touchscreen device contains indium tin oxide (ITO), a transparent material that senses your finger while allowing the display to remain crystal clear.
Indium compounds are used in high-efficiency thin-film solar cells, helping convert sunlight into clean electrical energy.
Indium improves semiconductors, LEDs, infrared detectors and advanced electronic components used in communication, medicine and space technology.
Indium rarely attracts attention, yet it quietly powers one of humanity's greatest technological revolutions. Every swipe on a smartphone, every tap on a tablet and every image displayed on an LCD screen is made possible by this remarkable element. Though hidden beneath the glass, indium connects billions of people across the world every single day.
Scientists are developing flexible displays, transparent electronics, wearable devices and next-generation solar technologies using indium-based materials.
Like many heavy elements, indium was forged inside ancient stars through neutron-capture processes before becoming part of Earth's crust and eventually contributing to modern technology.
The LCD screen you're reading right now most likely contains indium. Although you cannot see it, this rare element helps make modern digital displays possible.