periodic table


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Related to periodic table: List of elements

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 ?
Scerri thinks that the periodic table should be widened to have 32 columns so that the f-block elements can merge into the main table, and all elements would be displayed in order of atomic number.
Answers: 1, 2, 3, 4, 5, 6, 7; There are 7 rows in the periodic table.
Record bid: A-level chemistry students Zoe Mayne and Mohammed Foridi celebrate the completion of the scientific Periodic Table with Birmingham Metropolitan College students and staff.
The major chapters describe synthesis and reactivity of organic compounds in the third period and below and are arranged according to the order of the periodic table.
And it's that electron arrangement that banishes most of the rare earths to a row sequestered beneath the main body of the periodic table.
London, June 9 (ANI): Memorizing the periodic table just got harder after scientists from the international overseeing committees of physics and chemistry added two new elements to it.
In his recent book The Disappearing Spoon, and Other Tales of Madness, Love, and the History of the World From the Periodic Table of the Elements, American writer Sam Kean recounts the stories behind the building of one of humankind's greatest scientific achievements.
The Powys-born academic has become an internet sensation and a hit with teachers across the globe thanks to his involvement in a project called the Periodic Table of Videos.
This story is about one man re-inventing the periodic table so that it is easy to understand.
The topology of the 2x2 games; a new periodic table.
When young Dmitrii Mendeleev drafted the Periodic Table of Elements as a guide for his chemistry students, he was already dreaming of building a scientific empire in his home of Russia--with himself at its center.

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