Tellurium is chemically related to selenium and sulfur. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. The chemical symbol for Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”. The chemical symbol for Sodium is Na. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. The chemical symbol for Bismuth is Bi. The chemical symbol for Nobelium is No. Oxygen (8), chromium (24) and uranium (92) fall in global group 6 with the configurations O = [He]2s 2 2p 4, Cr = [Ar]4s 1 3d 5, and U = [Rn]7s 2 5f 3 6d 1. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. The chemical symbol for Tin is Sn. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. It is the fourth most common element in the Earth’s crust. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Thorium is found in the mineral aeschynite and euxenite.. Thorium has been used in the manufacture of mantles for gas lanterns. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. The first attempt to synthesize element 108 took place in 1978 at Russia’s Joint Institute for Nuclear Research (JINR) in Dubna, where a team headed by Yuri Oganessian and Vladimir Utyonkov bombarded radium with calcium and got isotope 270. The bulk properties of astatine are not known with any certainty. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. Zirconium Electronic configuration. Europium is one of the least abundant elements in the universe. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. The chemical symbol for Iridium is Ir. The chemical symbol for Gadolinium is Gd. In the periodic table, the elements are listed in order of increasing atomic number Z. Electron configuration of Fluorine is [He] 2s2 2p5. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Home; Random; Nearby; Log in; Settings; Donate; About Wikipedia; Disclaimers Only about 5×10−8% of all matter in the universe is europium. We have also distinguish between the possible and common oxidation states of every element. 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. Thorium's long electron configuration is 1s2 2s2 2p6 3s2 3p6 The chemical symbol for Francium is Fr. The chemical symbol for Boron is B. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. In the periodic table, the elements are listed in order of increasing atomic number Z. Because of this, the first two rows of the periodic table are labeled the s block. Technical data for Thorium Click any property name to see plots of that property for all the elements. The chemical symbol for Platinum is Pt. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. 5-4 Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. 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