What is periodic table?

  • (noun): A tabular arrangement of the chemical elements according to atomic number as based on the periodic law.

Periodic Table

A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number (number of protons). The standard form of table comprises an 18 × 7 grid or main body of elements, positioned above a smaller double row of elements. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the p-block to the right, the d-block in the middle, and the f-block below that. The rows of the table are called periods; the columns of the s-, d-, and p-blocks are called groups, with some of these having names such as the halogens or the noble gases. Since, by definition, a periodic table incorporates recurring trends, any such table can be used to derive relationships between the properties of the elements and predict the properties of new, yet to be discovered or synthesized, elements. As a result, a periodic table—whether in the standard form or some other variant—provides a useful framework for analyzing chemical behavior, and such tables are widely use in chemistry and other sciences.

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Some articles on periodic table:

List Of Elements By Atomic Properties - Notes
... radii are calculated, not experimental Periodic tables Standard form Periodic table Compact Large Text only Wide form Wide form (Inline f-block) Wide form, large Vertical Extended form Extension beyond the 7th period ...
Periodic Table - Open Questions and Controversies - Optimal Form
... The many different forms of periodic table have prompted the question of whether there is an optimal or definitive form of periodic table ... In its absence, the many different forms of periodic table can be regarded as variations on the theme of chemical periodicity, each of which explores and emphasizes different aspects ... The ubiquity of the standard or medium-long periodic table is thought to be a result of this layout having a good balance of features in terms of ease of construction and size, and its depiction of ...
Theodore Gray
... He is a prominent element collector and created a wooden periodic table with compartments for samples of each of the elements ... This table won him an Ig Nobel Prize in Chemistry in 2002 ... introduction to Michael Swanwick's The Periodic Table of Science Fiction ...
Timeline Of Chemistry - 20th Century
1911 Antonius Van den Broek proposes the idea that the elements on the periodic table are more properly organized by positive nuclear charge rather than atomic weight ... atomic number to fix inadequacies of Mendeleev's periodic table, which had been based on atomic weight ... artificially produced element, filling a gap in the periodic table ...
Aerogen - History
... class of gases was missing from the periodic table. 0 in his arrangement of the elements, which would later become the periodic table ... though it is a member of group 14 on the periodic table ...

Famous quotes containing the words table and/or periodic:

    They were not on the table with their elbows.
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    I saw no men there and no bones of men there.
    Robert Frost (1874–1963)

    But parents can be understanding and accept the more difficult stages as necessary times of growth for the child. Parents can appreciate the fact that these phases are not easy for the child to live through either; rapid growth times are hard on a child. Perhaps it’s a small comfort to know that the harder-to-live-with stages do alternate with the calmer times,so parents can count on getting periodic breaks.
    Saf Lerman (20th century)