Exploring the Table of Isotopes
n H He LiBe BCN OFNe NaMg AlSiP SClAr KCaScTi VCrMnFe CoNiCuZn GaGeAsSe BrKr RbSrYZr NbMoTcRu RhPdAgCd InSnSbTe IXe CsBaLaHf TaWReOs IrPtAuHg TlPbBiPo AtRn FrRaAc RfDbSg BhHsMt DsRg112 114 CePrNd PmSmEuGd TbDyHoEr TmYbLu ThPaU NpPuAmCm BkCfEs FmMdNo Lr Information about Isotopes Table of Isotopes Glossary Notes on Radioactivity from the ChemTeam The ABC's of Nuclear Science Modern Uses of Radioactive Isotopes Moments of Discovery For questions and comments about the website contact, preferably by e-mail, Richard B
Transition Elements - humans, body, used, water, process, Earth, life, plants
Extremely pure copper (greater than 99.95 percent purity) is generally called electrolytic copper because it is made by the process known as electrolysis. 7 Augustine WanjalaJan 24, 2014 @ 3:03 amThe artile is well-researched and quite educative, I have been made to understand why in our clan we are prohibited to wear golden yellow jewellery, thanks a lot
As you can probably guess from the name of the region in Zambia - the Copperbelt, cobalt is mined as a secondary product to copper that is dominant in the ore of this region. The RSC makes no representations whatsoever about the suitability of the information contained in the documents and related graphics published on this Site for any purpose
Aluminium was first isolated by Hans Christian Oersted in 1825 who reacted aluminium chloride (AlCl3) with potassium amalgam (an alloy of potassium and mercury). until 1925, at which time the American Chemical Society decided to revert back to aluminum, and to this day Americans still refer to aluminium as "aluminum"
a) The arrangement of elements in the Periodic Table - Trends in the Periodic Table and Bonding - Welcome to the NQ Higher Sciences website
Features of the table are; Groups- vertical columns within the table which will contain elements with similar chemical properties resulting from a common number of electrons in the outer shell, Periods- rows of elements arranged with increasing atomic number demonstrating an increasing number of outer electrons and a move from metallic to non-metallic characteristics
Pictures, stories, and facts about the element Tungsten in the Periodic Table
Can you imagine the incredible forces that must be acting on the holes? In some cases diamond or sapphire (nearly as hard) dies are used, but this one is made of a tungsten-cobalt alloy, probably because of its high strength even at very high temperatures. A photograph of a pile of powder just doesn't do it for me, OK? I mean, the powder is very impressive in person: Being tungsten it is of course remarkably heavy, and that's something I just love no matter how many times I pick it up
Transition Metals
The lanthanides and the actinides at the bottom of the table are sometimes known as the inner transition metals because they have atomic numbers that fall between the first and second elements in the last two rows of the transition metals. The disagreement about whether these elements should be classified as main group elements or transition metals suggests that the differences between these categories are not clear
Periodic Table of Elements and Chemistry
Just as Adams and Le Verrier could be said to have discovered the planet Neptune on paper, Mendeleev could be said to have discovered germanium on paper. This quantity can only be the charge on the central positive nucleus, of the existence of which we already have definite proof." Henry Moseley, Philosophical Magazine, Vol
Examples of Families - Alkali Metals - Alkaline Earth Metals - Transition Metals - Halogen Gases - Noble Gases Examples of Physical Properties - Density - Boiling Point - Melting Point - Conductivity - Heat Capacity Examples of Chemical Properties - Valence - Reactivity - Radioactivity Or search the sites for a specific topic
Interactive Periodic Table of the Elements
Today's Periodic Table The most important difference between Mendeleev's table and today's table is the modern table is organized by increasing atomic number, not increasing atomic weight. The number of elements in a period increases as you move down the periodic table because there are more sublevels per level as the energy level of the atom increases
The transition elements have positively charged forms or stable oxidation states which allow them to form many different ionic and partially-ionic compounds. Also known as transition metals because they must contain properties of metals, they are located together in groups three to twelve on the periodic table, shown in yellow on the periodic table to the right
Element 1: Hydrogen Element 2: Helium Element 3: Lithium Element 4: Beryllium Element 5: Boron Element 6: Carbon Element 7: Nitrogen Element 8: Oxygen Element 9: Fluorine Element 10: Neon Element 11: Sodium Element 12: Magnesium Element 13: Aluminum Element 14: Silicon Element 15: Phosphorus Element 16: Sulfur Element 17: Chlorine Element 18: Argon As we move past the first eighteen elements, you can start to learn about transition elements in the fourth period (row) of the periodic table
WebElements Periodic Table of the Elements
The evolution of chemistry's periodic table into the current form is an astonishing achievement with major contributions from many famous chemists and other eminent scientists
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