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English Neodymium is a soft silvery metal that tarnishes in air. The chemical symbol for Mercury is Hg. It is even less abundant than the so-called rare earths. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. The chemical symbol for Thallium is Tl. Radon is a radioactive, colorless, odorless, tasteless noble gas. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. Fermium is a member of the actinide series. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. The chemical symbol for Actinium is Ac. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. In the periodic table, potassium is one of the alkali metals. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. Neptunium metal is silvery and tarnishes when exposed to air. Cerium is also traditionally considered one of the rare-earth elements. Elder, the electron configuration of heavy metals has a complex behavior. Pt-190 is the only radioactive isotope and has no technological applications. In the case of Scandium the abbreviated electron configuration is [Ar] 3d1 4s2. It is a soft, silvery-white alkali metal. If you don’t have a chart, you can still find the electron configuration. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Platinum occurs natively, accompanied by small quantities of iridium, osmium, palladium, ruthenium, and rhodium, all belonging to the same group of metals. 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 9 6s 1 >> Back to key information about the … Iron is a metal in the first transition series. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. The chemical symbol for Rhenium is Re. In nuclear reactors, promethium equilibrium exists in power operation. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Tags: Question 6 . Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. The chemical symbol for Tin is Sn. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Lawrencium is the final member of the actinide series. Krypton is a member of group 18 (noble gases) elements. Schematic electronic configuration of platinum. 6s1 and the term symbol is 3D3. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Its boiling point is the lowest among all the elements. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. The chemical symbol for Neodymium is Nd. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. The chemical symbol for Samarium is Sm. The chemical symbol for Lead is Pb. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. H #1s^1# He #1s^2# Li #1s^2 2s^1# Be #1s^2 2s^2# B #1s^2 2s^2 2p^1# C #1s^2 2s^2 2p^2# N #1s^2 2s^2 2p^3# O #1s^2 2s^2 2p^4# F #1s^2 2s^2 2p^5# Gelson Luz is a Mechanical Engineer, expert in welding and passionate about materials. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. In the periodic table, the elements are listed in order of increasing atomic number Z. The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. 4f14. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The chemical symbol for Zinc is Zn. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Einsteinium is the seventh transuranic element, and an actinide. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. It is occasionally found in native form as elemental crystals. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. The chemical symbol for Sodium is Na. Discovered in South America by Ulloa in 1735 and by Wood in 1741. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. In fact their absorption cross-sections are the highest among all stable isotopes. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. 10XX,52,11XX,17,12XX,7,13XX,4,15XX,16,3XXX,2,40XX,10,41XX,12,43XX,5,44XX,4,46XX,5,47XX,3,48XX,3,5XXX,23,6XXX,3,71XX,1,8XXX,22,92XX,5,93XX,1,94XX,4,98XX,2,AISI,66,ASTM,171,Atomic-Mass,327,Atomic-Number,436,Atomic-Radius,86,Atomic-Symbol,329,Atomic-Volume,94,Austenitic,56,Boiling-Point,94,CBS,6,Chemical-Elements,100,Chemical-Symbol,217,CMDS,13,Coefficient-of-Thermal-Expansion,85,Covalent-Radius,87,Crystal-Structure,109,CS,17,CVS,3,Density,309,Duplex,6,Elastic-Modulus,30,Electrical-Conductivity,79,Electro-Affinity,87,Electron-Configuration,109,Electronegativity,102,Electrons-per-Shell,111,Enthalpy-of-Fusion,93,Enthalpy-of-Vaporization,95,Ferritic,12,Group-Number,218,HCS,14,Heat-of-Fusion,87,Heat-of-Vaporization,85,HMCS,16,Ionic-Radius,78,Ionization-Energy,102,Ionization-Potential,101,LCS,21,List,281,Martensitic,6,MCS,17,MDS,14,Melting-Point,96,MS,4,NCMDBS,6,NCMDS,31,NCS,2,NMDS,8,Oxidation-States,104,Period-Number,107,Properties,40,RCLS,1,RCS,16,RRCLS,3,RRCS,4,SAE,201,Site,2,SMS,5,Specific-Gravity,83,Specific-Heat,92,Specific-Weight,1,SS,80,Tests,2,Thermal-Conductivity,105,Valence-Electrons,98. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. Comprehensive information for the element Platinum Pt is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions. In the case of platinum, this means roughly that the repulsion felt by adding the final electron to the d-subshell is larger than the energy gained by completing that subshell, so the electron ends up in the s-orbital. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. The chemical symbol for Lutetium is Lu. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. The chemical symbol for Silver is Ag. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Uranium is a silvery-white metal in the actinide series of the periodic table. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Note that when writing the electron configuration for an atom like Fe, the 3d is usually written before the 4s. Electron configuration was first conceived under the Bohr model of the atom, and it is still common to speak of shells and subshells despite the advances in understanding of the quantum-mechanical nature of electrons.. An electron shell is the set of allowed states that share the same principal quantum number, n (the number before the letter in the orbital label), that electrons may occupy.
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