why 4s orbital gets filled befor 3d?? explain BRIEFLY?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
According to the Aufbau principle, the 4s sublevel is filled before the 3d sublevel because the 4s is lower in energy. ... Similar confusion occurs at higher levels, with so much overlap between the energy levels that the 4f orbitals don't fill until after the 6s,