1. The problem statement, all variables and given/known data Write the electron configuration for SiO4. 2. Relevant equations 3. The attempt at a solution My professor said we just need to show the configuration for Si and O separately. I think Si gains four electrons, so its configuration is 1s2 2s2 2p6 3s2 3p6 But Oxygen I'm not sure about. Each oxygen only gains one electron, so would it be 1s2 2s2 2p5? It's been a loooong time since I did chem and I can't remember how this works. Am I doing this right?