What is the electronic configuration of manganese? 3s2 3p2 b) 4s2 c) 4s2 3d5 d) 4s2 3d3
Correct Answer: Ne
Manganese has a total of 25 electrons and the 4s subshell fills before 3d as it is lower in energy (Aufbau principle). Keeping this in mind, manganese has an electron configuration of 4s2 3d5.