Which of the following Group 1 elements has the highest ionization energy? by Sunday | Aug 22 | Chemistry WAEC | 0 comments A. 55Cs B. 37Rb C. 19K D. 11Na E. 3Li Correct Answer: Option E – 3Li Users Also Read These:Which of the following substances has the highest…Which of these arrangement of elements is in order…What is the probability of producing a child of…In which of the following series are the atoms…Which of the following substances has the highest…