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 elements has the highest…Which of these arrangement of elements is in order…Which of the following arrangements indicates the…Which of the following substances has the highest…The ionization energy is affected by the following…