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Topic: List of elements by atomic mass

Related Topics

List of elements by atomic number

Periodic table

Periodic table (extended)

Periodic table (standard)

Atomic number

Periodic table (alternate)

Group 7 element

Protactinium

Periodic table period

Thulium

Lambda point

List of elements by density

List of elements by name

Neptunium

Lanthanum

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	Exact Masses and Isotopic Abundance of Elements - Numeric List
		Exact Masses and Isotopic Abundance of Elements - Numeric List
		Supplies and Services for Mass Spectrometers, Gas Chromatographs and Liquid Chromatographs
		Exact Masses of the Elements and Isotopic Abundances
	www.sisweb.com /referenc/source/exactmas.htm (127 words)

	List of elements by atomic mass - Wikipedia, the free encyclopedia
		This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.
		Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given.
		For artificial elements the nucleon count of the most stable isotope is listed brackets [] as the atomic mass.
	en.wikipedia.org /wiki/List_of_elements_by_atomic_mass (398 words)

	Atomic mass unit - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-10-22)
		It is defined to be 1/12 of the mass of one atom of carbon-12.
		Chemical element masses, as expressed in u, would therefore all be close to whole number values (within 2% and usually within 1%) were it not for the fact that atomic weights of chemical elements are averaged values of the various stable isotope masses in the abundances which they naturally occur.
		Before 1961, the physical atomic mass unit was defined as 1/16 of the mass of one atom of oxygen-16, while the chemical atomic mass unit was defined as 1/16 of the average mass of an oxygen atom (taking the natural abundance of the different oxygen isotopes into account).
	www.arikah.net /encyclopedia/KDa (672 words)

	Periodic table - Simple English Wikipedia
		The Periodic table of the chemical elements is a list of simple chemical substances (chemical elements).
		The elements are arranged in periods and groups of the Periodic Table.
		The period number of an element is the same as the number of electrons or protons in the atom.
	simple.wikipedia.org /wiki/Periodic_table (502 words)

	Introductory Terms, Page 2
		The Atomic Mass Unit, or a.m.u., is an arbitrarily defined unit of mass created by scientists for measuring the masses of atoms and molecules.
		one atomic mass unit is equal to 1/12th the mass of one atom of Carbon-12.
		The values for the atomic weights of the elements are calculated by summing the products of the different individual Isotope Masses multiplied by the decimal equivalent of their percent of abundance values.
	www.bcpl.net /~kdrews/introterms/intro2.html (823 words)

	Category:Chemical elements - Wikipedia, the free encyclopedia
		The main article for this category is Chemical element.
		A chemical element is a substance that cannot be divided or changed into different substances by ordinary chemical methods.
		The smallest particle of such an element is an atom, which consists of electrons centered around a nucleus of protons and neutrons.
	en.wikipedia.org /wiki/Category:Chemical_elements (139 words)

	2005 Atomic Weights
		Previous values may be consulted from the 1993 table, the 1995 table, the 1997 table the 1999 table or the 2001 table.
		Geological specimens are known in which the element has an isotopic composition outside the limits for normal material.
		The difference between the atomic weight of the element in such specimens and that given in the Table may exceed the stated uncertainty.
	www.chem.qmul.ac.uk /iupac/AtWt (734 words)

	Education Resources » Periodic table (Site not responding. Last check: 2007-10-22)
		In printed tables, each element is usually listed with its element symbol and atomic number; many versions of the table also include the element’s atomic mass and other information, such as its abbreviated electron configuration, electronegativity and most common valence numbers.
		Modern quantum mechanical theories of atomic structure explain that elements within the same group have the same electron configurations in their valence shell, which is the largest factor in accounting for their similar chemical properties.
		However, Mendeleev plotted a few elements out of strict mass sequence in order to make a better match to the properties of their neighbours in the table, corrected mistakes in the values of several atomic masses, and predicted the existence and properties of a few new elements in the empty cells of his table.
	www.thecatalyst.org /resource/2006/04/21/Periodic-table (1991 words)

	Chemical elements of the periodic table sorted by Atomic Mass
		The elemenents of the periodic table sorted by atomic mass
		The lightest chemical element is Hydrogen and the heaviest is Hassium.
		The unity for atomic mass is gram per mol.
	www.lenntech.com /Periodic-chart-elements/atomic-mass.htm (169 words)

	Nuclear constants help page (Site not responding. Last check: 2007-10-22)
		Lists of all isotopes of a given element, including number of protons Z and number of neutrons N.
		The mass number, isotope or element for which information is desired is entered in "forms" with the keyboard.
		The "mass number" is the total number of nucleons (protons plus neutrons) in a nucleus.
	www.upscale.utoronto.ca /nuclear/help.html (612 words)

	atomic mass unit - a Whatis.com definition
		An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12.
		The mass of an atom in AMU is roughly equal to the sum of the number of protons and neutrons in the nucleus.
		The AMU is used to express the relative masses of, and thereby differentiate between, various isotopes of elements.
	whatis.techtarget.com /gDefinition/0,294236,sid44_gci831527,00.html (211 words)

	Free Essays - Atomic Elements
		In the early 1800's Dobereiner noted that similar elements often had relative atomic masses, and DeChancourtois made a cylindrical table of elements to display the periodic reoccurrence of properties.
		Cannizaro determined atomic weights for the 60 or so elements known in the 1860s, then a table was arranged by Newlands, with the elements given a serial number in order of their atomic weights, beginning with Hydrogen.
		Further improvement provided by the Alexander Arrangement of the Elements is location of all the element data blocks in a continuous sequence according to atomic numbers while retaining all accepted property interrelationships.
	www.freeessays.tv /c660.htm (653 words)

	Periodic table of the elements with illustrations, atomic number, covalent radius, electronic configuration, excitation ... (Site not responding. Last check: 2007-10-22)
		Periodic table of the elements with illustrations, atomic number, covalent radius, electronic configuration, excitation states.
		Two pages show the elements as they appear naturally or how they are used while others detail atomic number and mass, elemental symbol, group number, half lives of radioactive elements, covalent atomic and ionic radii, boiling and melting points, density, electronic configuration and oxidation states.
		These pages include atomic number and mass, elemental symbol, group number, the half lives of the radioactive elements, the covalent atomic radii and ionic radii in pm (picometres).
	www.indigo.com /science-supplies/periodic-tables.html (205 words)

	Carnegie Endowment for International Peace
		That he was continuing to improve his weapons of mass destruction capabilities; that he was hiding these from the world; that there were large, unaccounted for stockpiles.
		It was made on the weapons of mass destruction as a whole, his ability to deliver them in the past and the dangers of having those weapons, particularly biological and chemical weapons, which he was known to have had, in the hands of this bloody tyrant."
		He has used weapons of mass destruction, and the president determined that it was not a risk the world should have to face any longer.
	www.carnegieendowment.org /static/npp/bush_admin_quotes.cfm (13344 words)

	ATOMIC THEORY List of Historical Contributors (Site not responding. Last check: 2007-10-22)
		It is a list of pioneers, discoverers and inventors with a few parallel achievements and a few relevant non-chemist/physicist historical figures added.
		He introduced the classical system of chemical symbols in 1811, in which elements are abbreviated by one or two letters to make a distinct abbreviation from their Latin name.
		He published a table of atomic weights in 1826 which was in good agreement with modern values (although some weights are off by a factor of 2 or ½), but included confusion as to the differences between atoms and molecules.
	www.hometown.aol.com /eilatlog/taxons/history.html (4488 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		The decimal variations (d) of relative atomic weights (M) in the form d = Mi - A + 1, are graphically represented as a function of the mass number A by 5 linear segments.
		The equations of these segments are statistically determined, and a list of d values established for A between 3 and 240.
		The values of the empirical relative atomic weights M/sub (A) obtained by the formula M = A + d - 1 for mass of different isotopes and the values recommended by the Nuclear Data Tables'' for the abundance of different stable natural isotopes correspond satisfactorily with the relative atomic weights, except for hydrogen and helium.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=4099184 (266 words)

	Atomic Structure Timeline (Site not responding. Last check: 2007-10-22)
		Using alpha particles as atomic bullets, probed the atoms in a piece of thin (0.00006 cm) gold foil.
		He wrote"The atomic number of an element is equal to the number of protons in the nucleus".
		Developed an explanation of atomic structure that underlies regularities of the periodic table of elements.
	www.watertown.k12.wi.us /HS/Staff/Buescher/atomtime.asp (835 words)

	Atomic Rocket: Engine List
		Also note that the designs in the list are probably optimized for high exhaust velocities at the expense of thrust.
		With these engines, the Engine Mass value includes the mass of the power plant (unless the value includes "+pp", which means the mass value does NOT include the mass of the power plant).
		Atomic hydrogen would be even better, but unfortunately it tends to explode at the clank of a falling dust speck (Heinlein calls atomic hydrogen "Single-H").
	www.projectrho.com /rocket/rocket3c2.html (5630 words)

	Isotopes Project, LBL
		The Project is responsible for evaluating nuclear structure data for 51 mass chains (~600 nuclides), most of them in the region of A=21-30 and 166-193, and provides a leadership role in the evaluation of neutron capture and radioactive decay data.
		The group also evaluates neutron capture gamma-ray data with the International Atomic Energy Agency (IAEA), Nuclear Data Section and collaborates in neutron cross section measurements with the Institute of Isotope and Surface Chemistry (Budapest).
		Additional publications from the Isotopes Project are the Table of Radioactive Isotopes, John Wiley & Sons, Inc., published in 1986, and the Table of Superdeformed Nuclear Bands and Fission Isomers (in collaboration with McMaster University, Canada), in Nuclear Data Sheets 97,241 (2002), on the Table of Isotopes CD-ROMs, and on the Internet.
	isotopes.lbl.gov (374 words)

	The Museum of Unworkable Devices
		During any virtual (imagined) motion, it is supplying new mass to the portion of chain lying on one side of the ramp exactly as fast as the portion of chain on the other side of the ramp loses mass.
		Mass cannot instantaneously vanish from one place in time and reappear at another place and time.
		The assumptions of perfectly elastic impact and infinite mass floor are no more unreasonable in posing this apparent paradox than the assumption of frictionless bearings in the wheel.
	www.lhup.edu /~dsimanek/museum/unwork.htm (9129 words)

	The chemical elements of the periodic table sorted by atomic number
		The elemenents of the periodic table sorted by atomic number
		For chemistry students and teachers: The tabular chart on the right is arranged by Atomic number.
		The first chemical element is Hydrogen and the last is Ununoctium.
	www.lenntech.com /Periodic-chart-elements/atomic-number.htm (170 words)

	Chemical Elements Table
		NOTES: Elements 112, 113, 114, 115, and 116 are under review and are thus not included.
		Isotopes are different forms of the same element having the same atomic number but different atomic weights.
		Mass number of the longest-lived isotope that is known.
	www.factmonster.com /ipka/A0001826.html (115 words)

	CHEM 0010 Unit
		C also contributes to the atomic mass of carbon.
		So these are the masses that will contribute to the atomic mass of carbon.
		Let's calculate the atomic mass of carbon using this data.
	nobel.scas.bcit.ca /chem0010/unit3/3.5.2_atomicMassCalc_carbon.htm (342 words)

	Periodic Tables (Site not responding. Last check: 2007-10-22)
		The Schemata of the Elements Charles William Johnson
		Periodic Table of the Elements Atomic Radius MIT
		Periodic Table of the Elements: Heat of Vaporization MIT
	www.chemistrycoach.com /periodic_tables.htm (1659 words)

	List of elements by symbol - Simple English Wikipedia
		Candidates for the Election for the Board of Trustees of the Wikimedia Foundation
		This is a list of elements by symbol.
		This page was last changed at 09:54, 1 August 2006.
	simple.wikipedia.org /wiki/List_of_elements_by_symbol (86 words)

	The Catalyst: Links - Periodic Tables
		The Atomic Mac is an award winning periodic table of the elements program for the Mac (or the PC).
		Proton Don is a Funbrain periodic table game designed to help students learn the element names and symbols, as well as their location on the periodic table.
		Rob Orr "offers innovative and exciting periodic tables of the elements suitable for any high school science class." (They even offer a periodic table for biology classes!) Their periodic tables are currently available from many of the larger, more common supply companies.
	www.thecatalyst.org /m03ptabl.html (1666 words)

	Elements,mass and moles-homework
		When you press "New Problem" a problem is generated by filling two of the cells in the first table.
		Put the correct value in the empty cell and press "Check Ans." Results appear in the second table.
		You need a periodic table or list of elements and atomic weights to use this page.
	chemistry2.csudh.edu /homework/hwatomsmoles.html (61 words)

	Elements
		This page provides exercises in relating elements, masses and moles.
		Put the correct value in the answer cell and press "Check Ans." Results appear in the second table.
		If you miss a problem three times, pressing "Show Answer" will display the complete solution and you will no longer be able submit an answer for that problem.
	science.widener.edu /svb/tutorial/atomsmolescsn7.html (85 words)

	Alphabetical Listing of the Elements (Site not responding. Last check: 2007-10-22)
		A website with a list and links to information about each element.
		The Atomic Mass on this table is the average mass of the isotopes.
		Mass numbers in parenthesis on this table are mass numbers of the most stable isotope.
	www.howe.k12.ok.us /~jimaskew/atomchrt.htm (40 words)

	Cumulative Publication List - Atomic Physics Division
		This is a searchable database of all publications produced at the Atomic Physics Division between 1968 and today.
		To list all publications produced at the Atomic Physics Division between 1968 and today, leave all fields empty and press "Search" or follow the link "List all publications".
		Preliminary Studies of the Emission of Atomic Mercury from a Lake Surface using Lidar Techniques.
	www-atom.fysik.lth.se /AFDOCS/Publications/pubsearch.asp?FLAG=1&... (6340 words)

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