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).
Abbreviation of alternating current
a radioactive element of the actinide series; found in uranium ores
Find another word for actinium. In this page you can discover 3 synonyms, antonyms, idiomatic expressions, and related words for actinium, like: periodic-table, ac and atomic number 89.