Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. Francium is an alkali metal, that has one valence electron. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. [65] Indium is used in photovoltaics as the semiconductor copper indium gallium selenide (CIGS), also called CIGS solar cells, a type of second-generation thin-film solar cell. [53] The compound semiconductors InGaN and InGaP are used in light-emitting diodes (LEDs) and laser diodes. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. [19] The half-life of 115In is very long because the beta decay to 115Sn is spin-forbidden. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. It is the heaviest essential mineral nutrient. For example, an atom of fluorine has seventeen protons and seventeen electrons. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. Indium is a minor component in zinc sulfide ores and is produced as a byproduct of zinc refinement. Full electron configuration of gallium: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 1. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. The chemical symbol for Europium is Eu. The chemical symbol for Osmium is Os. [69] Indium is added to some dental amalgam alloys to decrease the surface tension of the mercury and allow for less mercury and easier amalgamation. Knowing that ores from that region sometimes contain thallium, they searched for the green thallium emission spectrum lines. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. Which of the following is not isoelectronic with the others? Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. The chemical symbol for Antimony is Sb. Uranium has the highest atomic weight of the primordially occurring elements. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Elemental sulfur is a bright yellow crystalline solid at room temperature. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. [20] Indium-115 makes up 95.7% of all indium. The ground state electron configuration of ground state gaseous neutral indium is [ Kr ]. Table. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. The octet rule has been satisfied. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. Let’s first write its electron configuration. [71] In nuclear engineering, the (n,n') reactions of 113In and 115In are used to determine magnitudes of neutron fluxes. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Indium Electronic configuration. The chemical symbol for Thorium is Th. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. In 1863, Ferdinand Reich discovered indium in Germany. Because of this, the first two rows of the periodic table are labeled the s block. Most occupational exposure is through ingestion, from which indium compounds are not absorbed well, and inhalation, from which they are moderately absorbed. Under standard conditions, it is the lightest metal and the lightest solid element. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Pure radium is silvery-white alkaline earth metal. [51][47], Indium is produced exclusively as a by-product during the processing of the ores of other metals. Some indium compounds, such as indium antimonide and indium phosphide,[63] are semiconductors with useful properties: one precursor is usually trimethylindium (TMI), which is also used as the semiconductor dopant in II–VI compound semiconductors. When a silver-109 atom captures a neutron, it transmutes into silver-110, which then undergoes beta decay to become cadmium-110. Indium is a chemical element with the symbol In and atomic number 49. The chemical symbol for Gadolinium is Gd. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Electron configuration of indium cation. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. The chemical symbol for Helium is He. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. The chemical symbol for Zirconium is Zr. The chemical symbol for Calcium is Ca. The electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. During the roast-leach-electrowinning process of zinc smelting, indium accumulates in the iron-rich residues. Gallium. 1) You may use almost everything for non-commercial and educational use. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. The chemical symbol for Praseodymium is Pr. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Tin is a post-transition metal in group 14 of the periodic table. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Viewed 6k times 3 $\begingroup$ Just had a lecture there where the lecturer was doing revision on electronic configuration. [Xe] 6s2 for barium). Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Major advantage of lead shield is in its compactness due to its higher density. In a similar way to aluminium salts, indium(III) ions can be toxic to the kidney when given by injection. The outermost shell of the sodium ion is the second electron shell, which has eight electrons in it. For example, carbon has nine possible integer oxidation states from −4 to +4. The chemical symbol for Indium is In. An atom of Indium in the gas phase, for example, gives off energy when it gains an electron to form an ion of Indium. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. It may also be recovered directly from the process solutions. The chemical symbol for Nobelium is No. The ground state electron configuration for Indium (In) is: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1 or... [Kr] 5s2 4d10 5p1 Electronegative element, produced by reductive smelting, indium has a high melting point germanium! 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