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).
An oral drug that terminates early pregnancy by interfering with the action of progesterone, thereby preventing the attachment of a fertilized ovum to the uterine wall.
a rare polyvalent metallic element of the platinum group; it is found associated with platinum
Find another word for ruthenium. In this page you can discover 3 synonyms, antonyms, idiomatic expressions, and related words for ruthenium, like: periodic-table, ru and atomic number 44.