Indium (In), element 49 – Learn Acer periodic table

Transition metal, atomic number 49.

Indium is a chemical element with symbol In and atomic number 49. It is a post-transition metallic element that is rare in Earth's crust. The metal is very soft, malleable and easily fusible, with a melting point higher than sodium, but lower than lithium or tin.

Symbol In. Atomic mass 114.8181 u. Group 13, period 5. Electron configuration [Kr] 4d10 5s2 5p1. Electrons per shell 2, 8, 18, 18, 3. State at room temperature: Solid. Melting point 156.6 °C, boiling point 2071.8 °C. Discovered by Ferdinand Reich.

Element data from Wikipedia, CC BY-SA 3.0.

Indium (In), element 49 – Learn Acer periodic table

Indium

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