And how electrons behave in each separate orbital? I was told that, in case of Boron, electron in 3p orbital will not be confined to the imaginary region of the 3p orbital (3px orbital, whose shape resembles a bowtie), but instead will be moving around the nucleus as if its movement was confined to an s orbital (spherical). Also, do electrons interchange between orbitals? If yes, how often? In case of Boron, let's suppose. Do electrons usually "stick" to their orbitals? So, for example, if you try to mark a certain electron in 1s orbital, you'd know that if you return an hour later, that specific electron will still be confined to the region of 1s orbital, meaning it won't be "hanging out" in the region as defined by 3p orbital's shape, right?