Which of the following elements has the highest ionization energy? by Sunday | Mar 16 | Chemistry WAEC | 0 comments A. Calcium B. Chlorine C. Flourine D. Magnesium Correct Answer: Option D – Magnesium Users Also Read These:Which of the following arrangements indicates the…Moving from left to right across a period; the…Which of these arrangement of elements is in order…Which of the following substances has the highest…Elements with high ionization energies would