Periodic-table meaning

A table in which the chemical elements are arranged in order of increasing atomic number. Elements with similar properties are arranged in the same column (called a group), and elements with the same number of electron shells are arranged in the same row (called a period).
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The periodic table is a chart used in chemistry that shows chemical elements in order of their atomic number.

An organized table of chemical elements such as oxygen and carbon is an example of the periodic table.

noun
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An arrangement of the chemical elements according to their atomic numbers, to exhibit the periodic law.
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Attributive form of periodic table, noun.

adjective
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The tabular arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column.
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(chemistry) A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same column.
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