Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. Tellurium is far more common in the universe as a whole than on Earth. 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. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. The incorporation of metal into the host crystal lattice was confirmed by energy dispersive X-ray spectroscopy. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. They are called alkaline earth metals because they form alkaline solutions (hydroxides) when they react with water. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. The chemical symbol for Astatine is At. Nickel belongs to the transition metals and is hard and ductile. Salts of Oxoacids – Carbonates Alkaline earth metals form salts with oxoacids. Alkali metal halides, or alkali halides, are the family of inorganic compounds with the chemical formula MX, where M is an alkali metal and X is a halogen.These compounds are the often commercially significant sources of these metals and halides. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. 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. 1) All carbonates are ionic but beryllium carbonate is prone to hydrolysis. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Group II (alkaline earth) metals have a higher density because they have more protons and neutrons and they have smaller atomic radius. The alkaline earth metals are all silver-colored and soft, and have relatively low densities, melting points, and boiling points. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. The chemical symbol for Argon is Ar. . The chemical symbol for Radon is Rn. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. 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. They possess low melting and boiling points. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. Cerium is the second element in the lanthanide series. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. The chemical symbol for Promethium is Pm. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. The chemical symbol for Fermium is Fm. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. The chemical symbol for Silver is Ag. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Mg (s) + H2O (g) MgO (s) + H2 (g) The other group 2 metals will react with cold water with Fermium is a member of the actinide series. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. The other alkali metals are larger than Li and have weaker charge densities. b. high melting points. i) Physical. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. Previous Question Next Question. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. a) It is a silvery whiteand soft metal. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Its properties are thus intermediate between those of chlorine and iodine. The chemical symbol for Lawrencium is Lr. 1) All carbonates are ionic but beryllium carbonate is prone to hydrolysis. The chemical symbol for Iridium is Ir. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. ... Fluorides of alkaline earth metals are relatively less soluble than chlorides of alkaline earth metals. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Lattice parameters are determined by single crystal XRD analysis. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The chemical symbol for Actinium is Ac. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. 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. Reactivity increases down the group. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. The chemical symbol for Lanthanum is La. The melting point of ice is 0 °C. The chemical symbol for Gold is Au. Relatively low melting points and boiling points, as far as metals are concerned; ... (such as Mg 2+ and Ca 2+). 2Ca + O 2 2CaO CaCO 3 CaO + CO 2. They react with water to produce an alkaline metal hydroxide solution and hydrogen. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. As with other groups, the members of this family show patterns in their electronic configuration, especially the outermost shells, resulting in trends in chemical behavior: The alkaline earth metals are all silver-colored and soft, and have relatively low densities, melting points, and boiling points. Sodium is a soft, silvery-white, highly reactive metal. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Lead is widely used as a gamma shield. Neodymium is a soft silvery metal that tarnishes in air. The best known of these compounds is sodium chloride, table salt. For the same alkali metal the melting point decreases in the order fluoride > chloride > bromide > iodide because for the same alkali metal ion, the lattice energies decreases as the size of the halide ion increases. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Caesium has physical and chemical properties similar to those of rubidium and potassium. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. • LiCl is combined with earth-abundant NaCl, KCl, and MgCl 2 to reduce melting point. The Cookies Statement is part of our Privacy Policy. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). 1) You may use almost everything for non-commercial and educational use. Chlorine is a yellow-green gas at room temperature. c. low oxidation potentials. The motion of individual atoms, ions, or molecules in a solid is restricted to vibrational motion about a fixed point. The chemical symbol for Zirconium is Zr. There is no obvious pattern in the group’s boiling points. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. al. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. Ion is oxidised at the anode and escapes out as chlorine gas through the dome receiver. 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