Which of the following elements has a ground state electronic configuration with an incomplete penultimate shell? By: Sunday|Published on: May 12|Categories: Chemistry WAEC| 0 comments A. Iron B. Sodium C. Aluminium D. Calcium Correct Answer: Option A A. Iron Users Also Read These:What is the electronic configuration of an element…The electronic configuration of Mg²+ is?Element X, with electronic configuration 2, 8, 2 and…Which of the following cannot be deduced from the…Electronic configuration of an elements 13x in the…SEE ALSO Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu²+(aq) + 2e- → Cu(s).