21. Chemistry 1911 1911 Nobel Prize in chemistry for the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of radium. First person to win two nobel prizes. http://www.nobel.se/chemistry/laureates/1911/index.html

The Nobel Prize in Chemistry 1911 "in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element" Marie Curie, née Sklodowska France Sorbonne University Paris, France b. 1867 (in Warsaw, Poland) d. 1934 The Nobel Prize in Chemistry 1911 Presentation Speech Marie Curie Biography ... Nobel Prize in Physics 1903 The 1911 Prize in: Physics Chemistry Physiology or Medicine Literature ... Peace Find a Laureate: Last modified June 16, 2000 The Official Web Site of The Nobel Foundation

22. Syvum: Chemistry : Nomenclature For Elements chemistry Nomenclature for elements. Contributed by Mrs. Dzierzanowski. 9. Mn.10. Ra. 11. He. 12. Rn. 13. O. 14. Cl. 15. Ga. 16. U. 17. V. 18. S. 19. B. 20. K. http://www.syvum.com/cgi/online/serve.cgi/contrib/chem/Namequiz.tdf?0=

23. Argonne Chemistry Intranet (Internal Only) Windows program for the interactive analysis of crystal field spectra of fblock elements. http://chemistry.anl.gov/downloads/spectra/

Spectra Spectra is a program for paramagnetic ions energy levels calculations. It allows to calculate electronic structure of all elements with unfilled f-shells, including lanthanides and actinides in crystalline hosts. It could be used in scientific research, educational institutions, industry (laser materials, chemical analysis etc). User friendly Windows interface allows to customize the number of terms to be included in calculation (up to all terms in a given electronic configuration), obtain the values of reduced matrix elements for all d- and f-elements. Crystal field parameters could either be adjusted to fit experimental levels or calculated using exchange charge model (not included in this version). Fully consistent J-J' mixing is included for crystal field of any symmetry. Optical and ESR spectra can be analyzed using unified approach with exact decomposition of wavefunctions for each specific energy level. Free-ion Hamiltonian for f-electrons includes Coulomb interaction; configurational interaction; spin-orbit coupling; spin-spin and spin-other-orbit interaction, correction to spin-orbit coupling due to configuration interaction. Total number of free-ion parameters is 19: F2, F4, F6 for Coulomb interaction; dzeta for spin-orbit coupling; alpha, beta and gamma for two-body integrals in configuration interaction; T2, T3, T4, T6, T7, T8 for three-body configuration interaction; M0, M2, M4 for Marvin integrals of magnetic interactions; P2, P4, P6 for spin-orbit corrections due to configuration interaction.

24. Periodic Table Of The Elements of chemistry at the University of Sheffield, Sheffield S3 7HF, England. The currentversion of this document is at http//www.shef.ac.uk/~chem/webelements-I/K. http://chemserv.bc.edu/web-elements/K.html

potassium Atomic number: Atomic weight: Symbol: K Group number: Electronic configuration: Ar Description General information Physical data Radii ... Further information Description The metal is the seventh most abundant and makes up about 2.4% by weight of the earth's crust. Potassium is an essential constituent for plant growth and it is found in most soils. It is also a necessary element in the human diet. Potassium is never found free in nature, but is obtained by electrolysis of the chloride or hydroxide, much in the same manner as prepared by Davy. It is one of the most reactive and electropositive of metals and, except for lithium, it is the lightest known metal. It is soft, easily cut with a knife, and is silvery in appearance immediately after a fresh surface is exposed. It oxidises very rapidly in air and must be stored under argon or under a suitable mineral oil. As with other metals of the alkali group, it decomposes in water with the evolution of hydrogen. It catches fire spontaneously on water. Potassium and its salts impart a lilac colour to flames. General information Discoveror: Sir Humphrey Davy Date discovered: Discovered at: England Meaning of name: From the English word " potash/EM>" (pot ashes) and the Arabic word " qali meaning alkali (the origin of the symbol K comes from the Latin word " kalium Physical data Standard state: solid at 298 K Colour: silvery white Density of solid at ambient temperature/kg m Molar volume/cm Radii /pm Atomic: Covalent (single bond): Pauling radius for the ion [K] no data

25. ChemWeb.com | Home Publishes research papers and short communications in the following areas the chemistry, structure, and function of metalloenzymes; the interaction of inorganic ions and molecules with proteins and nucleic acids; the preparation and properties of coordination complexes of biological interest including both structural and functional model systems; the role of metalcontaining systems in the regulation of gene expression; the application of spectroscopic methods to determine the structure of metallobiomolecules; the function of trace elements in living systems; and related subjects. http://chemweb.com/library/elsevier/effect/display.exe?jcode=jib

26. Barron Research Group - Rice University - Andrew R. Barron Focuses on the chemistry of the group 13 elements with oxide and chalcogenide ligands. http://python.rice.edu/~arb/Barron.html

Welcome to the Barron Research Group Department of Chemistry Department of Mechanical Engineering and Materials Science Rice University, Houston, Texas Andrew R.Barron Current Courses Current Group Conferences and Seminars ... To Contact Andrew Barron Note: If you are using Microsoft Explorer to view this site, you may want to set yourTextZoom view at 75% Andrew R. Barron , Charles W. Duncan, Jr. - Welch Professor Items of Special Interest Representatives from Halliburton Company visit Rice to present funds to Prof. Barron and the Wiess School of Natural Science. Photos here Texas Center for Crystallography submission forms can be found here Course Information Inorganic Chemistry - CHEM360 - Spring 2003 Inorganic Seminar - CHEM 600 - Spring 2003 Effective Presentations for Chemists - CHEM606 - Spring 2003 -TBA Management for Science and Engineering MGMT 750/CHEM 750/MSCI 750 Management for Science and Engineering - Fall 2002 Andrew R. Barron -

27. Index Of /modules/by-module/Mac/BDFOY Parent Directory chemistry-elements-0.91.readme 03-Nov-1997 1243 2.3K chemistry-elements-0.91.tar.gz24-Jan-2001 1157 6.8K HTML-SimpleLinkExtor-0.72.tar.gz http://www.cpan.org/modules/by-module/Mac/BDFOY/?C=M&O=A

28. Periodic Table Of Elements Detailed data, basic nuclides, limited writeups, requires Javascript A Javascript based periodic table. http://atlas.chemistry.uch.gr/ptoe/

Sorry, your browser does not support frames. Come back with a frame-enabled browser.

29. Index Of /modules/by-module/Mac/BDFOY 1.03.tar.gz 17Dec-2002 1052 2.1K weather-0.10.tar.gz 20-Jan-2003 0846 2.1K Test-ISBN-0.5_06.tar.gz09-Sep-2002 1122 2.1K chemistry-elements-0.91.readme 03 http://www.cpan.org/modules/by-module/Mac/BDFOY/?C=S&O=A

30. A Periodic Table Of The Elements At Los Alamos National Laboratory Los Alamos National Laboratory's chemistry Division Presents. Periodic Tableof the elements. 4, 19 K 39.10, 20 Ca 40.08, 21 Sc 44.96, 22 Ti 47.88, 23 V 50.94, http://pearl1.lanl.gov/periodic/default.htm

Los Alamos National Laboratory's Chemistry Division Presents Periodic Table of the Elements A Resource for Elementary, Middle School, and High School Students Click an element for more information: Period Group** IA V IIIA H IIA IIIA IVA VA VIA VIIA He Li Be B ... Mg IIIB IVB VB VIB VIIB IB IIB Al Si P S ... Ar - VIII - K Ca Sc Ti ... Mt Lanthanide Series* Ce Pr Nd Pm ... Lu Actinide Series~ Th Pa U Np ... Lr ** Groups are noted by 3 notation conventions. For a list of a the element names and symbols in alphabetical order, click here Download Area Get Adobe Acrobat Reader for free Questions - Comments - Feedback Send an email to cstis@lanl.gov What is the Periodic Table? How to use the Periodic Table Click here to see Mendeleev's original Periodic Table ... DOE Last Updated: 9/5/2001 about this resource

31.   Mr.Bright's Chemistry Home Page Contains links to an interactive Periodic Table of elements, a summary of molecular shapes and electron pair geometry, as well as animations on molecular models. http://mrbright.8m.com/

This page uses frames, but your browser doesn't support them. so don't worry Please follow this link to enter the site

32. Carbon History, forms, compounds, and isotopes.Category Science chemistry elements Carbon...... vaporization conditions above ~2550oK, white carbon hydrogen, oxygen, nitrogen,and other elements, it forms Union of Pure and Applied chemistry adopted the http://pearl1.lanl.gov/periodic/elements/6.html

Carbon For pencils Atomic Number: Atomic Symbol: C Atomic Weight: Electron Configuration: [He]2s History (Latin: carbo, charcoal) Carbon, an element of prehistoric discovery, is very widely distributed in nature. It is found in abundance in the sun, stars, comets, and atmospheres of most planets. Carbon in the form of microscopic diamonds is found in some meteorites. Natural diamonds are found in kimberlite of ancient volcanic "pipes," found in South Africa, Arkansas, and elsewhere. Diamonds are now also being recovered from the ocean floor off the Cape of Good Hope. About 30% of all industrial diamonds used in the U.S. are now made synthetically. The energy of the sun and stars can be attributed at least in part to the well-known carbon-nitrogen cycle. Forms Carbon is found free in nature in three allotropic forms: amorphous, graphite, and diamond. A fourth form, known as "white" carbon, is now thought to exist. Ceraphite is one of the softest known materials while diamond is one of the hardest. Graphite exists in two forms: alpha and beta. These have identical physical properties, except for their crystal structure. Naturally occurring graphites are reported to contain as much as 30% of the rhombohedral (beta) form, whereas synthetic materials contain only the alpha form. The hexagonal alpha type can be converted to the beta by mechanical treatment, and the beta form reverts to the alpha on heating it above 1000

33. Quiz Hub - Online Learning Activities: Educational Games, Puzzles, And Quizzes Online learning activity to help chemistry students memorize the locations of common elements within the periodic table. http://quizhub.com/quiz/periodictable.cfm

Free Quizzes Arithmetic: Multiplication Facts Analytical Thinking: Logic Puzzle English: Scrambled Words Geography: U.S. State Capitals ... World / U.S. History Timeline Premium Collection Account: Password: Level: Grades K-5 Grades 6-12 Subscription Information The Quiz Hub includes hundreds of fun online interactive learning quizzes that help K-12 students enhance their core knowledge of English, languages, math, science, and social studies. Complete List of Quizzes Privacy Statement We do not give, trade, or sell information about our visitors to third parties. KidsHub.org High School Hub Coming Soon - Spelling Hub Request a Free Trial for Your School If you would like for your entire school to have a two-week free trial of the Quiz Hub, just FAX your request on official school letterhead to 707-371-1539. Please include your email address. We will email a password to you within 24 hours. 534 Village Blvd North, Baldwinsville NY 13021, dyann@schmidel.com

34. Oliver Manuel - Supernovae, Element Synthesis, Meteoritics, Data Confirms Local Element Synthesis; O. Manuel, K. Windler Journal of Radioanalyticaland Nuclear chemistry, Volume 238 of the Solar System and its elements pp http://www.umr.edu/~om

Oliver K . Manuel Professor of Chemistry Resume Abbreviated Resume Solar Abundances of Elements (Why the Model of a Hydrogen-filled Sun is Obsolete) Historical Information click here for a PDF Evidence of an Iron Rich Sun click here for a PDF ... click here for a PDF Recent Press Reviews Radio Missouri Transcript Sep 26 2002 (mp3 format audio file) CNN News report July 23 2002 Cosmiverse July 19 2002 UPI news story July 17 2002 Science Daily July 17 2002 ... Rolla daily news May 2001 Research Emphasis Course Work Nuclear Chemistry Introduction to Chemistry Areas of Interest: Nuclear Evolution of the Sun and in First Generation Stars Origin of the Elements in the Solar System Composition of the Sun Stable Isotope Mass Spectrometry Evolution of the Solar System Formation of the Atmosphere Rare Nuclear Reactions in Nature Environmental Distribution of Fission Products Current Projects: The Sun's Origin, Composition and Source of Energy

35. Prof Mokeup - Interactive Periodic Table Of The Elements Basic data Interactive version of the periodic table with pictures of elements. Includes a printable version. http://site.ifrance.com/okapi/chemistry.htm

36. PSIGate - Physical Sciences Information Gateway - Chemistry Organic chemistry, Protons,electrons and neutrons; elements,moles and mass; UsingMolar Volume; and Basescomplete treatments; Acid-base reactions-calculation of K; http://www.psigate.ac.uk/newsite/reference/chemlecs/

37. Chemistry 1951 (1912 1999) 1951 Nobel Prize in chemistry joint discovery in the chemistry of the transuranium elements with Edwin Mattison McMillan. USA, University of California, Berkeley, CA, USA. http://www.nobel.se/chemistry/laureates/1951/index.html

The Nobel Prize in Chemistry 1951 "for their discoveries in the chemistry of the transuranium elements" Edwin Mattison McMillan Glenn Theodore Seaborg 1/2 of the prize 1/2 of the prize USA USA University of California Berkeley, CA, USA University of California Berkeley, CA, USA b.1907 d.1991 b.1912 d.1999 The Nobel Prize in Chemistry 1951 Presentation Speech Edwin Mattison McMillan Biography ... Nobel Lecture The 1951 Prize in: Physics Chemistry Physiology or Medicine Literature ... Peace Find a Laureate: Last modified June 16, 2000 The Official Web Site of The Nobel Foundation

38. PSIGate - Physical Sciences Information Gateway Search Results These lecture notes discuss the chemistry of the sblock elements (alkali metalsand organomagnesium halides) and the reaction summary for Li, Na, K, Rb, Cs http://www.psigate.ac.uk/ROADS/subject-listing/chemistry/546.39.html

39. Periodic Table Very basic data Includes oxidation states and electronegativity. http://ull.chemistry.uakron.edu/periodic_table/

40. Liquid Elements reactive metal, with a melting point of 312.46 K. Rubidium spontaneously For moreinformation on elements, check out your About chemistry Periodic Table of http://www.chemengineer.about.com/library/weekly/blliquid.htm

zfp=-1 About Homework Help Chemistry Search in this topic on About on the Web in Products Web Hosting Chemistry with Anne Marie Helmenstine Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Periodic Table of the Elements Chemistry How-To Guide Chemical Structures Archive ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Liquid Elements Bromine (symbol Br and atomic number 35) and mercury (symbol Hg and atomic number 80) are both liquids at room temperature. Bromine is a reddish-brown liquid, with a melting point of 265.9 K. Mercury is a toxic shiny silvery metal, with a melting point of 234.32 K. Francium, cesium, gallium, and rubidium are four elements that melt at temperatures slightly higher than room temperature. Francium (symbol Fr and atomic number 87), a radioactive and reactive metal, melts around 300 K. Francium is the most electropositive of all the elements. Cesium (symbol Cs and atomic number 55), a soft metal that violently reacts with water, melts at 301.59 K. The low melting point and softness of francium and cesium are a consequence of the size of their atoms. In fact, cesium atoms are larger than those of any other element. Gallium (symbol Ga and atomic number 31), a grayish metal, melts at 303.3 K. Gallium can be melted by body temperature, as in a gloved hand. Rubidium (symbol Rb and atomic number 37) is soft, silvery-white reactive metal, with a melting point of 312.46 K. Rubidium spontaneously ignites to form rubidium oxide. Like cesium, rubidium reacts violently with water.

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