periodic table

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periodic table

a systematic arrangement of the chemical elements. An earlier version was devised in 1869 by Dmitri Ivanovich Mendeleev (Russian chemist, 1834-1907). By arranging the elements in order of their atomic weights, he was able to show relationships, such as valency, that occurred at regular intervals and was able to predict the properties of elements still undiscovered in the nineteenth century.

per·i·od·ic ta·ble

(pēr'ē-od'ik tā'bĕl)
A graphic arrangement of chemical elements by atomic number and chemical properties.

periodic table

A chart with the chemical elements arranged by their atomic numbers.
See: periodic law
See also: table

periodic table,

n a pictorial representation of all chemical elements arranged by increasing order of atomic numbers. Periods and groups are the primary classifications found within the table.
References in periodicals archive ?
This calculated element is the last (heaviest of all theoretically possible elements) in the Periodic Table of Elements because Y cannot exceed 1.
In the regular form of the Periodic Table of Elements, each cell of the Table bears a large information about the element, including the electron constitution of the atom.
It is known that elements of the Periodic Table of Elements have fractional numerical values of atomic masses.
Whether studying to be a physicist in college or just trying to get through tenth grade chemistry class, Periodic Table is the premier reference for the Periodic Table of Elements, available in either Standard or Landscape mode for $1.
Scientists who have habitually pressed their noses against chemistry's best-known icon -- the flat periodic table of elements -- may similarly have missed a third dimension that transforms the table into a more informative landscape, says theoretical chemist Leland C.
In the theoretical deduction of the hyperbolic law of the Periodic Table of Elements [1], the main attention was focused onto the following subjects: the equilateral hyperbola with the central point at the coordinates (0; 0), its top, the real axis, and the line tangential to the normal of the hyperbola.
Medeleevsystematized chemical knowledge of his day by drawing up the periodic table of elements.
I've already received calls from leading chemists who are concerned about the implications on the periodic table of elements, particularly H (Hydrogen) and He (Helium).
Using a structure and inspiration from the chemical periodic table of elements, leadership expert Mike Mears writes a cleverly organized and insightful guide to becoming the leader you want and need to be.
Therefore, this does not change the form of the Periodic Table of Elements, which remains the same.

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