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Indium (In). Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of indium-115 (atomic number:
Indium (In). Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of indium-115 (atomic number: 49), the most common isotope of this element. The nucleus consists of 49 protons (red) and 66 neutrons (orange). 49 electrons (white) successively occupy available electron shells (rings). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Indium is a post-transition metal in group 13, period 5, and the p-block of the periodic table. It has a melting point of 157 degrees Celsius. Similar to gallium and thallium, it is used in liquid crystal displays and touchscreens.
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Photo credit: © CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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