noun🔗ShareCäsiumThe chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal."Example Sentence: "Because caesium is so reactive, scientists must handle it carefully in special environments to prevent dangerous reactions." "Weil Cäsium so reaktionsfreudig ist, müssen Wissenschaftler es in speziellen Umgebungen vorsichtig handhaben, um gefährliche Reaktionen zu verhindern.elementchemistrysubstancematerialscienceChat with AIVocabulary GamePractice Reading
