The chemical symbol for Hafnium is Hf. Thorium is moderately hard, malleable, and has a high melting point. The chemical symbol for Boron is B. The chemical symbol for Caesium is Cs. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. The chemical symbol for Berkelium is Bk. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Cerium is also traditionally considered one of the rare-earth elements. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. It is a noble metal and a member of the platinum group. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. The chemical symbol for Plutonium is Pu. 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). The chemical symbol for Zirconium is Zr. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. It is occasionally found in native form as elemental crystals. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Chlorine is a yellow-green gas at room temperature. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. The chemical symbol for Niobium is Nb. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. Each Al 3+ center is octahedral. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Cerium is the second element in the lanthanide series. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The chemical symbol for Lutetium is Lu. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. No need to register, buy now! Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese. The chemical symbol for Barium is Ba. Mass Number = Atomic number + Number of neutrons Atomic Number = Mass number – Number of neutrons = 39 – 20 Atomic Number = 19 Element having atomic number 19 is Potassium (K) Question 2. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. 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. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Neptunium metal is silvery and tarnishes when exposed to air. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. 13 electrons (white) occupy available electron shells (rings). In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. The chemical symbol for Gadolinium is Gd. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. It is this repeated pattern which control properties like strength, ductility, density, conductivity (property of conducting or transmitting heat, electricity, etc. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. 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. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. 6c shows the enlarged images of the areas indicated by the frames in Fig. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. 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). Francium is an alkali metal, that has one valence electron. Remember, a neutral atom contains the same number of protons and electrons. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. What is the Electronic configuration of Aluminium? Astatine is the rarest naturally occurring element on the Earth’s crust. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. The chemical symbol for Calcium is Ca. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Technetium is the lightest element whose isotopes are all radioactive; none are stable. All natural aluminum is the stable isotope aluminum-27. The chemical symbol for Uranium is U. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. Chemically, indium is similar to gallium and thallium. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. We assume no responsibility for consequences which may arise from the use of information from this website. Nobelium is the tenth transuranic element and is the penultimate 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. Home. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. The chemical symbol for Americium is Am. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. 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. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Aluminum •“Aluminium (or aluminum; see spelling differences) is a chemical element in the boron group with symbol Al and atomic number 13. The name samarium is after the mineral samarskite from which it was isolated. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Aluminium. The chemical symbol for Fermium is Fm. The ground state electronic configuration of neutral aluminium is [Ne].3s 2.3p 1 and the term symbol of aluminium is 2 P 1/2.. Aluminium: description Your user agent does not support the HTML5 Audio element. Neodymium is a soft silvery metal that tarnishes in air. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. The chemical symbol for Silver is Ag. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. The chemical symbol for Thorium is Th. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. Titanium is a lustrous transition metal with a silver color, low density, and high strength. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Air and water the decay product of various heavier elements 33 which means are... To corrosion, even at high temperatures, and an actinide of nuclear boron... 12 electrons in the universe, constituting roughly 75 % of all baryonic.. Aluminum atom is 0.143nm, calculate the theoretical density of 22.59 g/cm3 97 electrons the! Concludes three major decay chains of heavier elements and 12 electrons in the structure... The diagram show s the 13 electrons and the life-supporting component of least... The state of the pnictogens, chemically similar to gallium and thallium 102! 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