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:An element Y has the electronic configuration 1s²…The electronic configuration of Mg²+ is?Given that the electronic configuration of an…The electronic configuration of an element X is 1s²…How many principal electronic shells has an atom…SEE ALSO Hydrogen is readily released when dilute hydrochloric acid reacts with?