Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity.

Borax, also known as sodium borate (Na2B4O7), has already been discovered around the year 900, as evidenced by a mention in a book by Persian alchemist Muhammad ibn Zakariya al-Razi. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Holmium is a part of the lanthanide series, holmium is a rare-earth element. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. The chemical symbol for Rhodium is Rh. Lawrencium is the final member of the actinide series. 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. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. Uranium has the highest atomic weight of the primordially occurring elements.

But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2020 Periodic Table | All Rights Reserved |. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Chlorine is a yellow-green gas at room temperature. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Berkelium is a member of the actinide and transuranium element series. The chemical symbol for Thorium is Th.

Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). The chemical symbol for Barium is Ba.

Thallium is a soft gray post-transition metal is not found free in nature. For this purposes, a dimensionless quantity the Pauling scale, symbol χ, is the most commonly used. Astatine is the rarest naturally occurring element on the Earth’s crust. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements.

Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. 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. The chemical symbol for Terbium is Tb.

Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure.

Iron is a metal in the first transition series. What is Discovery of the Neutron - Definition, What is Structure of the Neutron - Definition, Davy, Sir Humphry & Thénard, Louis-Jaques & Gay-Lussac, Louis-Joseph.

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This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium.

The chemical symbol for Argon is Ar. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals.

The chemical symbol for Germanium is Ge. The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons.

Electronegativity, symbol χ, is a chemical property that describes the tendency of an atom to attract electrons towards this atom. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure.

Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Note that, electrical resistivity is not the same as electrical resistance.

The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. Cerium is the second element in the lanthanide series. The chemical symbol for Erbium is Er. 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. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure.

In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Lead is a heavy metal that is denser than most common materials. 0 1. The chemical symbol for Nobelium is No.

The chemical symbol for Manganese is Mn. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure.

There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. Neptunium is the first transuranic element. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor.

Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife.

Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife.

Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure.

al. and Gay-Lussac, L.-J. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich.

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