1. Periodic Table - Wikipedia, The Free Encyclopedia The periodic table of the chemical elements is a tabular method of displaying the chemical elements. Although precursors to this table exist, its invention http://en.wikipedia.org/wiki/Periodic_table

Periodic table From Wikipedia, the free encyclopedia Jump to: navigation search "The Periodic Table" redirects here. For the book by Primo Levi , see The Periodic Table (book) For a diagram of the periodic table, see standard periodic table below The periodic table of the chemical elements is a tabular method of displaying the chemical elements . Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior. The periodic table is now ubiquitous within the academic discipline of chemistry , providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior. The table has also found wide application in physics biology engineering , and industry . The current standard table contains 117 confirmed elements as of October 16 (while element 118 has been synthesized

2. Chem4Kids.com: Elements & Periodic Table: Periodic Table As you probably saw, the periodic table is organized like a big grid. The elements are placed in specific places because of the way they look and act. http://www.chem4kids.com/files/elem_pertable.html

Elements as Building Blocks As you probably saw, the periodic table is organized like a big grid. The elements are placed in specific places because of the way they look and act. If you have ever looked at a grid, you know that there are rows (left to right) and columns (up and down). The periodic table has rows and columns, too, and they each mean something different. You've got Your Periods... Even though they skip some squares in between, all of the rows go left to right. When you look at a periodic table, each of the rows is considered to be a different period (Get it? Like PERIODic table.). In the periodic table, elements have something in common if they are in the same row. All of the elements in a period have the same number of atomic orbitals . Every element in the top row (the first period) has one orbital for its electrons . All of the elements in the second row (the second period) have two orbitals for their electrons. It goes down the periodic table like that. At this time, the maximum number of electron orbitals or electron shells for any element is seven. ...and Your Groups Now you know about periods. The periodic table has a special name for its columns, too. When a column goes from top to bottom, it's called a

3. International Union Of Pure And Applied Chemistry > Periodic Table Of The Elemen Periodic Table of the Elements. printable version pdf file 28KB (version date 22 June 2007) - sized to print on A4 and US letter paper http://www.iupac.org/reports/periodic_table/index.html

I U P A C Periodic Table of the Elements pdf file - 28KB (version date 22 June 2007) - si zed to print on A4 and US letter paper - including the 2005 revised standard atomic weights of 16 chemical elements see release or see CI tear off version May/June 2006 issue [ pdf file - 68KB Earlier versions: - 3 Oct 2005 pdf file - 17KB - 4 Feb 2005 [ pdf file - 17KB CI tear off Mar/Apr 2005 issue [ pdf file - 87KB - 1 Nov 2004 [ pdf file - 17KB - 7 Nov 2003 [ pdf file - 17KB CI tear off Jan/Feb 2004 issue [ pdf file - 474KB For a brief historical review of the table, see Chem. Int. 2004, Jan , p. 8 Below, each element is keyed to a color matching the time of its discovery Time of Discovery Before 1800 H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Rf Db Sg Bh Hs Mt Ds Rg La La La La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu La La La Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Notes - Element with atomic numbers 112 and above have been reported but not fully authenticated; see

4. The Table: Periodic Table Of The Elements The entire Periodic Table of the Elements, up to Lawrencium (element 103) with descriptive information and properties for each. http://noshadow.cnc.net/table/

Periodic Table of the Elements H He Li Be ... Lr Alphabetic by Name: actinium aluminium americium antimony ... zirconium Alphabetic by Symbol: Ac Ag Al Am ... Zr Sources: Cox, P. A. The Elements . New York: Oxford University Press, 1989. Pode, J.S.F. ... . New York: Halsted, 1970. Samsonov, G.V., ed. Handbook of the Physiochemical Properties of the Elements . New York: Plenum, 1968. Tierney, Michael J. HyPeriodic Table . San Jose, California: Michael Tierney, 1995. Zumdahl, Steven S. Chemistry . Lexington, Massachusetts: D. C. Heath and Company, 1993. home ... David August

5. Periodic Table Periodic table of elements a science teaching resource for students years K10. http://teachingtreasures.com.au/science-projects/periodic_table.htm

Printable Periodic tables Home Teaching Treasures Printable Periodic tables Home Teaching Treasures

6. The Periodic Table Of Elements HAT MADE THE table periodic? The value of the table gradually became clear, but not its meaning. Scientists soon recognized that the table s arrangement of http://www.aip.org/history/curie/periodic.htm

Exhibit Contents Polish Girlhood A Student in Paris Research Breakthroughs Founding The Radium Industry Recognition and Disappointment Tragedy and Adjustment Scandal and Recovery War Duty The Radium Institute A Second Generation of Curies Further Info Pierre Curie Marie Curie and Her Legend Mendeleev and The Periodic Table Radioactivity: The Unstable Nucleus Fred Joliot and Irene Curie Discovery Paper by the Curies "Radium" by M. Curie Further Reading and Links Exhibit Credits Site Map Exhibit Contents Page More History Exhibits Dmitri Ivanovich Mendeleev (1834-1907) HO ORGANIZED THE ALPHABET? We will never be able to attribute to a single individual the development of the basic building blocks of writing. Yet we do know the name of the man who devised the method of classifying the basic building blocks of matter. Dmitri Ivanovich Mendeleev was born in Siberia in 1834. When Mendeleev became a professor of general chemistry at the University of St. Petersburg, he was unable to find an appropriate textbook and thus began writing his own. That textbook, written between 1868 and 1870, would provide a framework for modern chemical and physical theory. Mendeleev first trained as a teacher in the Pedagogic Institute of St. Petersburg before earning an advanced degree in chemistry in 1856.

7. Periodic Table Periodic Table v2.5. Biographies A bit of History About this Periodic Table Sign our Guest Book View our Guest Book. Select an element, Hydrogen http://nautilus.fis.uc.pt/st2.5/index-en.html

8. Chemistry: Periodic Table And More thetech.mit.edu/Chemicool/ - Similar pages PDF WebElements printable periodic tableFile Format PDF/Adobe Acrobat http://the-tech.mit.edu/Chemicool/

Periodic Table Forum Chemistry Dictionary Chemistry Tools ... Link to Us Periodic Table Search by name or symbol: Group I II III IV V VI VII VIII H He Li Be ... Lr Legend Solid Liquid Gas Synthetic Alkali metals Alkali earth metals Transition metals Rare earth metals Other metals Noble gases Halogens Other nonmetals Periodic Table first discovered in 1869 by Dmitry I. Mendeleyev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right accross the table. The horizontal rows a called periods and the vertical rows, groups. A noble gas The block of elements between groups II and III are called transition metals . These are similar in many ways; they produce colored compounds, have variable valency and are often used as catalysts . Elements 58 to 71 are known as lanthanide or rare earth elements. These elements are found on earth in only very small amounts. Elements 90 to 103 are known as the actinide elements. They include most of the will known elements which are found in nuclear reactions . The elements with larger atomic numbers than 92 do not occur naturally. They have all been produced artificially by bombarding other elements with particles. Zirconium Zinc Yttrium Ytterbium ... Education 2.0 - Get the degree and career you want, all online

9. The Periodic Table Of The Elements This is a simple, printable periodic table accurate to four digits. http://www.swansontec.com/selement.htm

IA The Periodic Table of the Elements VIIIA H IIA IIIA IVA VA VIA VIIA He Li Be B C N O F Ne Na Mg IIIB IVB VB VIB VIIB VIIIB IB IIB Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Uun Uuu Uub Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Prepared by Swanson Technologies www.swansontec.com

10. Periodic Table Of The Elements www.cs.ubc.ca/elements/periodictable - Periodic Table. Electron configuration as a function of table http://www.cs.ubc.ca/elements/periodic-table

Periodic Table of the Elements H He Li Be ... Lr List by atomic number . List by name . List by symbol To the fancy table-based version. Go back to the elements page.

11. Chemistry: WebElements Periodic Table This is the home page of webelements, chemistry s periodic table (periodic chart) of the elements on the WorldWide Web. Find information about elements http://www.webelements.com/

WebElements Scholar - for university/school students. Shop: periodic table posters, mugs, t-shirts, molecular model kits, games... Chemdex directory Chemistry News Chemistry Forums ... Link to WebElements Chemistry search engine Posters from our shop WebElements Periodic Table Group Period H He Li Be ... Uuo *Lanthanoids La Ce Pr Nd ... Yb **Actinoids Ac Th Pa U ... Chemieb¼cher (DE) The periodic table The periodic "law" of chemistry recognises that many properties of the chemical elements are periodic functions of their atomic number (the number of protons within the element's atomic nucleus). The periodic table is an arrangement of the chemical elements ordered by atomic number in columns ( groups ) and rows ( periods ) presented so as to emphasize their periodic properties. The element polonium is very much in the news at present, perhaps for the first time ever, and for the wrong reasons. This site does contain further information about polonium The groups (columns in the periodic table) are numbered 1-18. Some groups enjoy non-systematic names as well. The include Group 1 (alkali metals), Group 2 (alkaline earth metals), Group 15 (pnictogens, or pnicogens), Group 16 (chalcogens), Group 17 (halogens) and Group 18 (noble gases). While not groups in the periodic table, some other groupings of elements are often named as well. These include the lanthanoids (less preferably lanthanides) and actinoids (less preferably actinides). There are many different ways, sometimes ingenious, of arranging the chemical elements according to which properties are of particular interest but that shown here is a standard form of the periodic table. The relative merits of various other periodic table organisations is still the subject of debate. Particularly useful versions include the following:

12. WebElements Periodic Table Of The Elements - Scholar Edition Home This is the home page of webelements Scholar, the periodic table of the elements on the WorldWide Web. http://www.webelements.com/webelements/scholar/

WebElements TM periodic table Scholar edition : Home page Scholar Home Pro Home Books (USA) Books (UK) ... Credits WebElements TM periodic table Scholar edition Jump start: select an element from the periodic table. Group Period H He Li Be ... Uuo *Lanthanoids La Ce Pr Nd ... Yb **Actinoids Ac Th Pa U ... No Notes WebElements :the first periodic table on the WWW Author: Mark Winter WebElements Ltd and University of Sheffield , England] Royal Society of Chemistry 1998 HE Teaching Award winner The WebElements scholar edition aims to be a high quality source of information on the WWW about the periodic table for students. You will find many pictures showing element structures and periodic properties. Note that elements 113, 115, and 117 are not known, but are included in the table to show their expected positions. Elements 114, 116, and 118 have only been reported recently. WebElements is the periodic table on the WWW WebElements TM , the periodic table on the WWW, URL: http://www.webelements.com/ Mark Winter The University of Sheffield Document served: Friday 25th January, 2008

13. Chemistry: Periodic Table And More Chemicool Chemistry periodic table (periodic chart) of the elements. Information about hydrogen, oxygen, silver, carbon, aluminium plus Forum, http://www.chemicool.com/

Periodic Table Forum Chemistry Dictionary Chemistry Tools ... Link to Us Periodic Table Search by name or symbol: Group I II III IV V VI VII VIII H He Li Be ... Lr Legend Solid Liquid Gas Synthetic Alkali metals Alkali earth metals Transition metals Rare earth metals Other metals Noble gases Halogens Other nonmetals Periodic Table first discovered in 1869 by Dmitry I. Mendeleyev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right accross the table. The horizontal rows a called periods and the vertical rows, groups. A noble gas The block of elements between groups II and III are called transition metals . These are similar in many ways; they produce colored compounds, have variable valency and are often used as catalysts . Elements 58 to 71 are known as lanthanide or rare earth elements. These elements are found on earth in only very small amounts. Elements 90 to 103 are known as the actinide elements. They include most of the will known elements which are found in nuclear reactions . The elements with larger atomic numbers than 92 do not occur naturally. They have all been produced artificially by bombarding other elements with particles. Zirconium Zinc Yttrium Ytterbium ... Education 2.0 - Get the degree and career you want, all online

14. Periodic Table - Chart Of All Chemical Elements The interactive periodic table of elements chemical data, health and environmental effects presented in five languages. http://www.lenntech.com/periodic-chart.htm

Periodic table Search : Contact us Periodic chart of elements Metals Select element Actinium Aluminum Barium Beryllium Bismuth Bohrium Cadmium Calcium Cesium Chromium Cobalt Copper Darmstadtium Dubnium Francium Gallium Gold Hafnium Hahnium Hassium Iron Indium Iridium Lanthanum Lead Lithium Magnesium Manganese Meitnerium Mercury Molybdenum Nickel Niobium Osmium Palladium Platinum Potassium Radium Rhenium Rhodium Rubidium Ruthenium Rutherfordium Scandium Seaborgium Silver Sodium Strontium Tantalum Technetium Thallium Tin Titanium Tungsten Ununbium Ununhexium Ununquadium Ununumium Vanadium Yttrium Zinc Zirconium Semi-conductors Select element Antimony Arsenic Astatine Boron Germanium Polonium Silicon Tellurium Non-metals Select element Bromine Carbon Chlorine Fluorine Hydrogen Iodine Nitrogen Oxygen Phosphorus Selenium Sulphur Inert gasses Select element Argon Helium Krypton Neon Radon Xenon Lanthanides en actinides Select element Americium Berkelium Californium Cerium Curium Dysprosium Einsteinium Erbium Europium Fermium Gadolinium Holmium Lawrencium Lutetium Mendelevium Neodymium Neptunium Nobelium Plutonium Prasendymium Promethium Protactinium Samarium Terbium Thorium Thulium Uranium Ytterbium Each chemical element contains a link to a page that explains its chemical properties health effects environmental effects , application data, an image and also information of the history/inventor of each element Now available: history of the periodic table I II III IV V VI VII VIII H Choose elements by name , by atomic number , by symbol , by mass He Li Be Click here for the history of the periodic table B C N ... Lr Click here to download a PDF version from that periodic table An interactive, printable extended version of the Periodic table of chemical elements of

15. Periodic Table Of Elements (EnvironmentalChemistry.com) periodic table of elements provides comprehensive data on the chemical elements including scores of properties, element names in many languages, http://environmentalchemistry.com/yogi/periodic/

Environmental Chemistry Hazardous Materials News, Careers Periodic Table of the Elements Skip to ad free log in Skip to Periodic Table Skip to elements sorted by links (more useable to non-graphical browsers and handhelds) Skip to site menu on this page. This periodic table of elements provides comprehensive data on the chemical elements including scores of properties, element names in many languages and most known nuclides (Isotopes). Below the table there is a " Chemical Elements Sorted By " section with links that will sort chemical elements by various properties. Newest Articles and News Editorial: China and the environment: The U.S. could learn a lot from China Oct. 29, 2007 China may have a long way to go on their environmental record, but they are aggressively tackling their environmental issues and the United States could learn a lot from what China is doing. Editorial: Oct. 16, 2007 Nanotech-cleantech: bridging the gap to real sustainability Aug 15, 2007 What is nanotech, how can it help us bridge the gap to sustainablity and what are its risks? This article takes a closer look at these issues. Latest Headlines in Chronological Order User Login Subscribe to ad-free access Career Listings Canada Post Your Resume Post Job Listings Biology Chemical Engineering ... Science India Post Your CV Post Job Listings Biology Chemical Engineering ... Software Engineering United Kingdom Post Your CV Post Job Listings Biology Chemical Engineering ... Science United States Post Your Resume Post Job Listings Biomedical Engineering Chemical Engineering ... School Principals Job Listing Search:

16. Periodic Table Of The Elements - Element Chart A periodic table is a must for Chemistry. There are many periodic tables on the Internet, but this is a collection of the bestof-the-best. http://chemistry.about.com/od/periodictables/Periodic_Tables.htm

zOBT=" Ads" zGCID=" test1" zGCID=" test1 test9" zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') z160=zpreC(160,600);z336=zpreC(336,280);z728=zpreC(728,90);z133=zpreC(336,133);zItw=160 Chemistry var h2=document.getElementsByTagName("h2")[0];if(h2.getElementsByTagName("a")[0].firstChild.nodeValue.length>29)h2.className="long"; Home Education Chemistry Search over 1.4 million articles by over 600 experts Chemistry About.com Search Chemistry Basics Science Projects How Things Work ... Print Filed In: Periodic Tables Periodic Tables A periodic table is a 'must' for Chemistry. There are many periodic tables on the Internet, but this is a collection of the best-of-the-best. Each table I have selected either offers unique information or presents the data particularly well. Humorous Periodic Tables (3) Periodic Table of the Elements This handy table is from your About Guide. Check back often for additional facts and figures. Periodic Table Study Guide Learn about the periodic table of the elements. Find out about the history of the periodic table, how the elements are organized, and how to use the periodic table to predict the behavior of unfamiliar elements. Periodic Table of the Elements for Kids This table was made with kids and homework in mind. It includes element groups and periods, element symbols, atomic numbers, atomic weights, and links to detailed facts for each element.

17. A Periodic Table Of The Elements At Los Alamos National Laboratory The Chemistry Division s periodic table describes the history, properties, resources, uses, isotopes, forms, costs, and other information for each element. http://periodic.lanl.gov/

18. Periodic Table Upto-date, interactive, and detailed information on every chemical element. Infoplease s periodic table shows the atomic weight, melting and boiling points http://www.infoplease.com/periodictable.php

Site Map FAQ in All Infoplease Almanacs Biographies Dictionary Encyclopedia Spelling Checker Daily Almanac for Jan 24, 2008 Search White Pages Skip Navigation Home Almanacs ... Word of the Day Editor's Favorites 2007 Year in Review Black History Month Leap Year Martin Luther King Day ... 2008 Calendar Search: Infoplease Info search tips Search: Biographies Bio search tips Health and Science Science Periodic Table KEY ELEMENT CLASSIFICATION Non-Metals Alkali Metals Alkaline-earth Metals Rare Earth Elements Transition Metals Other Metals Semimetallics Halogens Inert Gases Radioactive Rare Earth Elements See also essay on the periodic table a chart of the chemical elements , and the science section of the Homework Center Source: Gperiodic Cite Print Email ... Add to Reddit Premium Partner Content Related content from HighBeam Research on: periodic table The Periodic Table: Its Story and Significance.(Book review) (Chemistry International) The nature of things: attempts to change the periodic table raise eyebrows. (Science News) Upper limit of the periodic table and synthesis of superheavy elements. (Progress in Physics) Our class periodic table.(TRIED AND TRUE)

19. The Periodic Table Of The Elements, Standard Form The definitive online periodic table reference site including technical data, and photographs and descriptions of thousands of samples of the chemical http://www.periodictable.com/

Buy this as a periodic table poster Newest samples 24 December, 2007 What you'll find on this site My Popular Science Column THE ELEMENTS Click any element to see hundreds of pictures, stories and facts Created with Mathematica Sponsored by For Students For Teachers For Scientists For Stock Photo and Video The wooden periodic table table Like what you see? Click here to buy a periodic table poster based on what you see here. Want real elements? Element Collection sells samples and displays with real physical elements in them. Looking for the 3D Alexander Arrangement? The former contents of periodictable.com are now at allperiodictables.com

20. Chemical Elements.com - An Interactive Periodic Table Of The Elements An upto-date periodic table with detailed but easy to understand information. http://www.chemicalelements.com/

Home About This Site Comments Help Links ... Window Version Show Table With: Name Atomic Number Atomic Mass Electron Configuration ... Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals ... Rare Earth Elements Click on an element symbol for more information This page was created by Yinon Bentor. Please visit this site's license agreement and privacy statement

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