1. The problem statement, all variables and given/known data Describe the ”conduction band” in Na metal. Why it is half-filled and non-magnetic? 3. The attempt at a solution Na has electron configuration: [Ne]3s^1 the 3s band is highest in energy and is the conduction band for Na. since Na has 1 electron in the 3s band, and the 3s band can hold 2 electrons, the conduction band is half filled. this single electron is not spin paired, so this gives a net magnetic moment to the conduction band. ---------------- Why would the conduction band be half filled AND non magnetic? Am I misunderstanding what a conduction band is?