Aufbau principle Memes

Chemistry students everywhere just felt a disturbance in the force. The "4s before 3d" electron filling rule haunts us all. That song your teacher made you sing? Pure psychological warfare. Memorizing orbital filling order is the closest chemists get to reciting poetry. And just like poetry, we forget it immediately after the exam. The electron doesn't even follow these rules half the time—quantum mechanics is just trolling us.