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Topic: Periodic table wide


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  NationMaster - Encyclopedia: Periodic table (wide)
A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.
A period 5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the elements.
A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements.
www.nationmaster.com /encyclopedia/Periodic-table-%28wide%29   (6921 words)

  
 Kids.Net.Au - Encyclopedia > Periodic table
The periodic table of the chemical elements is a display of the known chemical elements, arranged by electron structure so that many chemical properties vary regularly across the table.
The original table was created without a knowledge of the inner structure of atoms: if one orders the elements by atomic mass, and then plots certain other properties against atomic mass, one sees an undulation or periodicity to these properties as a function of atomic mass.
Despite their dramatic differences in mass within the group, their allotropes have very similar properties: They are all highly corrosive (meaning they combine readily with metals to form metal halide[?] salts); chlorine and fluorine are gases, while bromine is a very low-boiling liquid; chlorine and bromine at least are highly colored.
www.kids.net.au /encyclopedia-wiki/pe/Periodic_table   (541 words)

  
  Periodic Table - MSN Encarta
Periodic Table, table of the chemical elements arranged to illustrate patterns of recurring chemical and physical properties.
The periodic table has been published in various shapes and sizes, but the most commonly used modern form begins with a column of group 1 metals on the left-hand side, followed by a column of group 2 alkaline earth metals.
A number of chemists contributed to the development of the periodic table during the 19th century; however, Mendeleyev is regarded as the primary discoverer.
encarta.msn.com /encyclopedia_761586387/Periodic_Table.html   (1184 words)

  
 Chemical & Engineering News: Education- Supersized Periodic Table
The world's largest periodic table made its debut in Chicago on Sept. 22 at the kick-off event for a two-week citywide science education and awareness program.
The larger than life table was unveiled at the opening of the first annual Chicago Science Expedition, which was organized to emphasize the importance of science "not only in the classroom but in everyday life," according to Michael Davis, an assistant chemistry professor at Chicago's Harold Washington College and one of the event planners.
On opening day, passersby were drawn to the large plaza below the periodic table display, where a setup like a state fair provided Chicagoans with an opportunity to visit booths and observe and participate in scientific and technical demonstrations that addressed chemistry, physics, robotics, and other areas.
pubs.acs.org /cen/education/84/8444educ2.html   (551 words)

  
 Education Resources » Periodic table
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 behaviour.
The main value of the periodic table is the ability to predict the chemical properties of an element based on its position in the table.
A period is a horizontal row in the periodic table of the elements.
www.thecatalyst.org /resource/2006/04/21/Periodic-table   (1991 words)

  
 periodic table - Encyclopedia.com
periodic table chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. Moseley.
In the periodic table the elements are arranged in columns and rows according to increasing atomic number (see the table entitled Periodic Table).
The elements of a period are characterized by the fact that they have the same number of electron shells; the number of electrons in these shells, which equals the element's atomic number, increases from left to right within each period.
www.encyclopedia.com /doc/1E1-periodtbl.html   (1109 words)

  
 Periodic table - Gurupedia
The periodic table of the chemical elements is a tabular display of the known chemical elements.
A group is a vertical column in the periodic table of the elements.
Mendeleev was later vindicated by the discovery of the electronic structure of the elements in the late 19th and early 20th century.
www.gurupedia.com /p/pe/periodic_table.htm   (839 words)

  
 periodic table — FactMonster.com
Periodic Table of the Elements: Beryllium - Periodic Table of the Elements: Beryllium 4 Be Beryllium 9.01218 2 · 2
Periodic Table of the Elements: Hydrogen - Periodic Table of the Elements: Hydrogen 1 H Hydrogen 1.00794 1
Periodic Table of the Elements: Boron - Periodic Table of the Elements: Boron 5 B Boron 10.81 2 · 3
www.factmonster.com /ce6/sci/A0838327.html   (759 words)

  
 ipedia.com: Periodic table Article   (Site not responding. Last check: )
The periodic table of the chemical elements is a tabular display of the known chemical elements.
A group is a vertical column in the periodic table of the elements.
Mendeleev was later vindicated by the discovery of the electronic structure of the elements in the late 19th and early 20th century.
www.ipedia.com /periodic_table_1.html   (847 words)

  
 Stephanie's Periodic Table
The periodic table is an extremely helpful tool when it comes to understanding why elements act the way that they do.
Even though the table is arranged in a way that allows students to systematically understand it, trying to teach this to 11th and 12th graders is very difficult.
It can be used to discuss anything about the periodic table and is nice if students have questions that they may not want to ask in class or if they have questions that come up at home.
www.pitt.edu /~sst4/periodictable.html   (2356 words)

  
 The Periodic Table
On this site, I have three Excel 2000 files: the first one is just a bunch of periodic tables that I have formatted for various uses in class, and the second one is a spreadsheet with a whole bunch of data compiled about each element, and graphical representations of their trends.
Many periodic tables are printed in color, with the colors used to indicate whether an element is solid, liquid, or gas in it's standard state (298 K and 1 atm).
The elements on the periodic table are arranged in order of increasing atomic number, and elements with similar properties are placed in the same columns.
www.dbooth.net /mhs/chem/periodictable.html   (1483 words)

  
 UCLA chemist provides new insights into science icon: The per... 11/17/2006   (Site not responding. Last check: )
Today, the periodic table has 116 elements, the most recent of which was added just last month — an element that for now is known as element 118 for the number of protons in its nucleus, more than in any other element.
Most of the credit for the periodic table has gone to a distinguished Russian scientist named Dimitri Ivanovich Mendelev, who was the last of the six scientists to present a periodic table in the 1860s.
On the day he devised the periodic system, he was supposed to inspect a cheese factory, Scerri said, and decided not to go; Mendelev sketched his first periodic table on the back of an invitation that day, Feb. 17, 1869.
newsroom.ucla.edu /page.asp?RelNum=7517   (1661 words)

  
 The Periodic Table
Identify elements in various regions of the Periodic Table: metals, nonmetals, metalloids, alkali metals, alkaline earth metals, halogens, noble gases, transition elements, inner transition elements, lanthanides and actinides.
The Periodic Table of the Elements is a way to arrange the elements to show a large amount of information and organization.
The Lanthanides belong to Period 6, and the Actinides belong to Period 7.
gpc.edu /~pgore/PhysicalScience/Periodic-table.html   (1468 words)

  
 UCLA chemist provides new insights into science icon: The per... 11/17/2006
Today, the periodic table has 116 elements, the most recent of which was added just last month — an element that for now is known as element 118 for the number of protons in its nucleus, more than in any other element.
Most of the credit for the periodic table has gone to a distinguished Russian scientist named Dimitri Ivanovich Mendelev, who was the last of the six scientists to present a periodic table in the 1860s.
On the day he devised the periodic system, he was supposed to inspect a cheese factory, Scerri said, and decided not to go; Mendelev sketched his first periodic table on the back of an invitation that day, Feb. 17, 1869.
www.newsroom.ucla.edu /page.asp?RelNum=7517   (1661 words)

  
 Photo Periodic Table Posters
Periodic tables sell well in any museum gift shop or educational outlet: Imagine how well a pretty one will sell.
The 27" x 53" version is almost four and a half feet wide: Imagine you had a 60" (diagonal), 250 dpi monitor and that should give you an idea of what the poster looks like in person.
Very exciting for many of the teachers I work with that are currently being held captive by their outdated, boring periodic tables.
theodoregray.com /PeriodicTable/Posters   (1257 words)

  
 Periodic properties of the elements
To understand how the periodic table is organized, imagine that we write down a long horizontal list of the elements in order of their increasing atomic number.
For the second period (n=2) there is a p block but no d block; in the usual "long form" of the periodic table it is customary to leave a gap between these two blocks in order to accommodate the d blocks that occur at n=3 and above.
This is particularly evident in the first few rows of the periodic table, in which small effects tend to be magnified anyway because an added electron produces a large percentage increase in the number of electrons in the atom.
www.chem1.com /acad/webtext/atoms/atpt-6.html   (3848 words)

  
 Periodic Table | World of Physics
From the way elements are organized in the Periodic Table, we can predict their behavior and write chemical formulas of compounds using just a few general guideli nes.
Using such rules is not the same as understanding why elements in certain areas the Periodic Table behave as they do, but the trends that arise from the arrangement of elements in the Periodic Table allows a chemist to remember useful facts about the types of compounds formed from specific elements and their chemical reactions.
This reflects a periodic property o f elements: as you move from left to right across a row on the periodic chart, you move from atoms of metals which tend to give up electrons relatively easily to atoms of nonmetals which do not readily give up electrons in forming chemical bonds.
www.bookrags.com /research/periodic-table-wop   (3637 words)

  
 MS Periodic Table
What is the whole idea of the periodic table?The idea of the Periodic Table is to arrange the elements in a way that enables chemists to understand patterns in the properties of the elements.
Period 4 is elements 19-36, starts with K (2, 8, 8, 1) and Ca (2, 8, 8, 2) and finishes with Kr Note that the number of shells containing electrons is equal to the period number.
The metals in the periodic table are mainly found in the left hand columns (Groups 1 and 2) and in the central blocks of the transition elements.
homepage.mac.com /eannaoboyle/7sci/matter/ptablenotes.html   (1791 words)

  
 Periodic table elements - Periodic Table - Flash Version   (Site not responding. Last check: )
The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised by English analytical chemist John
Periodic table of chemical elements, chemical elements database from ChemGlobe.
The periodic table is the most important reference a chemist has because it puts all the known elements into a meaningful pattern.
xn--7sxs2h5wr.com /vivy/periodic-table-elements.htm   (1035 words)

  
 2. The Periodic Table
Here is a typical representation of the periodic table with the element symbols and the number of electrons in each atom.
In this empirical table, the elements are ordered by the number of electrons (or protons) in the atom and are grouped according to their chemical properties.
So the middle 10 columns of the periodic table are the d seats and, technically, the d seats in the 4th row are the 3d seats, the d seats in the 5th row are 4d seats and so on.
www.bpreid.com /applets/ChemicalChange/2_theperiodictable.htm   (1440 words)

  
 Periodic table help – Wiki at Help.com   (Site not responding. Last check: )
The periodic table of the chemical elements is a tabular method of displaying the chemical elements, devised by the Russian chemist Dmitri Mendeleev in 1869.
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.
www.help.com /wiki/Periodic_table   (241 words)

  
 Haptics Periodic Table
The periodic table is a good example of this - much of the information in the table is conveyed to the student by the relative position of elements within the chart.
Although Braille versions of the table can offer students a sense of position of the elements, a great deal of other information on the table must be omitted simply for the sake of clarity.
The Haptics Periodic Table currently in development will allows students to hear the relative locations of elements within the periodic table.
nide.snow.utoronto.ca /hperiodic.htm   (281 words)

  
 Synergy Creations - Periodic Table
The periodic table--the cornerstone of chemistry--expresses in a compact form the relationships between all the elements in the universe.
Synergy Creations' Periodic Table 4 is a versatile chemistry reference tool for your Macintosh that takes the periodic table beyond the simple paper periodic table found in so many textbooks and classrooms.
Periodic Table on CD is available for $40, shipping included.
www.synergycreations.com /periodic/index.html   (506 words)

  
 GCSE Periodic Table Notes at Doc Brown's Chemistry Clinic.
The idea of the Periodic Table is to arrange the elements in a way that enables chemists to understand patterns in the properties of elements, but some reminders first.
The idea of the Periodic Table is to arrange the elements in a way that enables chemists to understand patterns in the properties of elements.
Period 2 starts with a solid low melting reactive metal lithium, in the middle there are the high melting and rather unreactive non-metals boron and carbon, next to the end is the very highly reactive non-metal gas fluorine, and the period finishes with the very unreactive gas neon.
www.wpbschoolhouse.btinternet.co.uk /page03/3_34ptable.htm   (5933 words)

  
 Chemistry Resources at BPC: History of the Development of the Periodic Table of Elements
Before written history, people were aware of some the the elements in the periodic table.
Meyer's 1864 textbook included a abbreviated version of a periodic table used to classify about half of the known elements.
Mendeleev perioidc table appeared in his work "On the Relationship of the Properties of the Elements to their Atomic Weights" in 1969.
www.bpc.edu /mathscience/chemistry/history_of_the_periodic_table.html   (615 words)

  
 AngliaCampus : Periodic Table - Clusters of Metals
However, within the periodic table other 'families' of metals exist which are not so immediately obvious.
The largest of these are the transition metals, a group of thirty elements which separate the metallic groups on the left of the table from the non-metals on the right.
In most modern periodic tables, they are placed below the main table, but they should be placed after the elements lanthanum and actinium respectively.
www.angliacampus.com /public/sec/science/periodic/page14.htm   (398 words)

  
 Periodic Table
Dimitri Mendeleev was one of the first to publish a table using these properties to arrange the elements.
Periodic Law: “When elements are arranged in order of increasing atomic weight their properties are repeated periodically.” This idea of repetition of properties is one of the most important milestones in chemistry.
The electron cloud is pulled inward due to an increase in the nuclear charge (the attractive force of the positively charged nucleus for the negatively charged electron cloud.) The more protons, the stronger the nuclear charge.
www.sciencebyjones.com /periodic_table1.htm   (1207 words)

  
 ßBack to Chem 501 Portfolio Pageß
Four areas of concentration were chosen for evaluation: periodic trends, element sources and abundances, periodic table history, and alternative representations of the periodic table.
The ACS periodic table is a logical and natural starting point for most periodic table topics.
The Spiral periodic table is arranged according to reactivity AND size of the atom.
www.sas.upenn.edu /~gehring/webanalysis.html   (1269 words)

  
 The Periodic Table
It is called the Periodic Table because the horizontal rows into which the elements have been arranged are called periods.
The reason that we don't write the table like this is because it would make it too wide to be easily readable.
However, the fact that there were large numbers of gaps in Mendeleyev's table suggests that there were as yet unknown elements that should go in those gaps.
richardbowles.tripod.com /chemistry/periodic/ptable.htm   (626 words)

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