Remember, try to review about orbitals, valence electrons, shells and sub-shells as well. Iridium Electronic configuration. 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. The indium atom has a radius of 162.6 pm and a Van der Waals radius of 193 pm. For indium 3+ (atomic number = 49, charge = +3, number of electrons = 49-3 = 46). 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 is a malleable, very soft, silvery-white metal. Electron Configuration Chart for All Elements in the Periodic Table. Indium forms InAs, which is found in photoconductors in optical instruments. Indium has the chemical symbol In and the atomic number 49. 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 was discovered by Ferdinand Reich and H.T. 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. 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. For indium:a) Write the electron configuration.b) Predict the ion(s) of indium.c) Write out the electron configurations of the ion(s). It is a soft, malleable metal that is similar to gallium. This video tutorial will help you determine the electronic configuration of the Indium atom. Richter in 1863. 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 . 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. 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. ... Indium(III) salts are known to be toxic to the kidneys. Word Origin: Latin indicum. Indium was discovered by Ferdinand Reich and Hieronymous Theodor Richter in 1863. There are 118 elements in the periodic table. Resources Indium is named for the brilliant indigo line in the element's spectrum. Indium was discovered by Ferdinand Reich and Hieronymous Theodor Richter in 1863. Electron Configuration: [Kr] 5s 2 4d 10 5p 1. Richter in 1863. In order to form a 3^+ ion, it must lose three electrons. 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 … Indium was discovered by Ferdinand Reich and H.T. Indium atoms have 49 electrons and the shell structure is 2.8.18.18.3. Check 2+2+6+2+6+2+10+6+2+10+1 = 49. 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