Real, totally heavily simplified answer. All atoms could be magnets, but most don’t have a force because the electron orbitals aren’t out enough. In fact just about everything can be explained by what the electron orbitals are doing. Even why the chair you’re sitting in feels solid. It’s the orbitals. See and the deeper lesson on knowing the right questions to ask.
Missed the first sentence I guess. It’s why I included the video for a much better, although also simplified and incomplete answer, and he says why.