Indium has the chemical symbol In and the atomic number 49. Word Origin: Latin indicum. Indium was discovered by Ferdinand Reich and H.T. ... Indium(III) salts are known to be toxic to the kidneys. Indium was discovered by Ferdinand Reich and Hieronymous Theodor Richter in 1863. The number of electrons in each of indium's shells is [2, 8, 18, 18, 3] and its electron configuration is [Kr] 4d 10 5s 2 5p 1. Includes Elements, 7.31, Poor metals, 1.78, Group 13, Primordial, Period 5, 0.233, 0.25, 114.818, 429.75, [Kr] 4d 10 5s 2 5p 1 , 2345 and 49. Electronic configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 4f 14 5d 7 6s 2 >> Back to key information about the … It is a soft, malleable metal that is similar to gallium. Radioactive In-111 is used as a radiotracer in nuclear medicine to label white blood cells and proteins. A neutral iron atom has 26 protons and 26 electrons. The electron configuration for the iron(III) ion is: "1s"^2"s"^2"2p"^6"3s"^2"3p"^6"3d"^5" The element iron, Fe, has the atomic number 26, which is the number of protons in its atomic nuclei. There are 118 elements in the periodic table. Each element has a unique atomic structure that is influenced by its electronic configuration, which is the distribution of electrons across different orbitals of an atom. Richter in 1863. In order to form a 3^+ ion, it must lose three electrons. Indium is named for the brilliant indigo line in the element's spectrum. Resources Iridium Electronic configuration. The indium atom has a radius of 162.6 pm and a Van der Waals radius of 193 pm. The number of electrons in each of indium's shells is [2, 8, 18, 18, 3] and its electron configuration is [Kr] 4d 10 5s 2 5p 1. Indium forms InAs, which is found in photoconductors in optical instruments. For indium:a) Write the electron configuration.b) Predict the ion(s) of indium.c) Write out the electron configurations of the ion(s). Electron Configuration Chart for All Elements in the Periodic Table. The indium atom has a radius of 162.6 pm and a Van der Waals radius of 193 pm. Remember, try to review about orbitals, valence electrons, shells and sub-shells as well. Check 2+2+6+2+6+2+10+6+2+10+1 = 49. For indium 3+ (atomic number = 49, charge = +3, number of electrons = 49-3 = 46). The ground state electron configuration of ground state gaseous neutral indium is [Kr].4d … Indium was discovered by Ferdinand Reich and Hieronymous Theodor Richter in 1863. It has the electron configuration [Kr] 2s 2 2p1 and may adopt the +1 or +3 oxidation state; however, the +3 state is more common. Electron configuration for N^3-: 1s^2 2s^2 2p^6. For indium atoms (atomic number = 49, electrons = 49) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^1 . 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