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:If an element with high electron affinity combines…Which of the following arrangements indicates the…The ionization energy is affected by the following…Which of these arrangement of elements is in order…Explain the meaning of Ionization energy. - NABTEB QUESTION