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 ?
The goal of remineralization is to restore the full and balanced spectrum of elements from the periodic chart to the soil using a natural source over a period of time.
It wasn't only the periodic chart he had taught us, but how to be a decent person with a value system in an immoral world.
This element] makes rackets twice as stiff and twice as light as most of the metals on the periodic chart," says Bill Severa, director of technology for Wilson Sporting Goods.