Which of the following elements has a ground state electronic configuration with an incomplete penultimate shell? by Sunday | May 12 | Chemistry WAEC | 0 comments A. Iron B. Sodium C. Aluminium D. Calcium Correct Answer: Option A A. Iron Users Also Read These:The penultimate plague God put in Egypt before the…Element X, with electronic configuration 2, 8, 2 and…How many principal electronic shells has an atom…A man exerts a pressure of 2.8 x 10³Nm‾² on the…Which of the following cannot be deduced from the…