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:What is the probability? of a man of blood group AB…Which of the following arrangements is in order of…Which of the following substances has the highest…How are ionization energies related to the…In which of the following series are the atoms…