Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Heavy nuclei with an even number of protons and an even number of neutrons are (due to Pauli exclusion principle) very stable thanks to the occurrence of ‘paired spin’. It occurs on Earth as the decay product of various heavier elements. The chemical symbol for Aluminum is Al. Although neodymium is classed as a rare earth, it is a fairly common element. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. The chemical symbol for Technetium is Tc. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Tin is Sn. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. The chemical symbol for Berkelium is Bk. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Copyright MooMooMath and Science. 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. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. The chemical symbol for Ruthenium is Ru. The GCF or greatest common factor is the largest positive integer that will divide into each number evenly. Its boiling point is the lowest among all the elements. Atomic nuclei consist of protons and neutrons, which attract each other through the nuclear force, while protons repel each other via the electric force due to their positive charge. The chemical symbol for Tellurium is Te. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. The chemical symbol for Astatine is At. The chemical symbol for Praseodymium is Pr. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. Thulium is an easily workable metal with a bright silvery-gray luster. The chemical symbol for Zinc is Zn. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Designed by Georgia Lou Studios. 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. 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. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. Also to help understand this concept there is a chart of the nuclides, known as a Segre chart.    Melting Point Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. The chemical symbol for Mendelevium is Md. 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.    Alkaline Earth Metals 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. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. Tin is a post-transition metal in group 14 of the periodic table. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. It is fairly soft and slowly tarnishes in air. 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 Osmium is Os. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. 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.    Rare Earth Elements, Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. The chemical symbol for Arsenic is As. The chemical symbol for Nickel is Ni. The periodic table provides a wealth of information for the elements. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure.

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