The periodic table is the chart arranging every element by its structure. Look at the periodic table.
Mendeleev left gaps for elements nobody had found and predicted their properties correctly. The periodic table is called periodic because the properties repeat at regular intervals.
1nounperiodic tableThe chart that arranges every element by its structure.
“The periodic table on the wall stopped at element ninety-two.”
periodic table is a chart.
Named from the periodic law, since properties repeat when elements are set out by atomic number.
The table is termed “periodic” because it follows the periodic law – when chemical elements are arranged in order of increasing atomic number, elements with similar properties recur at intervals.
Etymology from Wiktionary, CC BY-SA
Practised in Chemistry & Elements