No, the spaces between atoms are not filled with dark matter. Dark matter is a hypothetical form of matter that does not interact with light or other forms of electromagnetic radiation, making it difficult to detect directly. It is believed to make up a significant portion of the total matter in the universe, but its exact nature and composition are still not well understood.
Atoms, on the other hand, are composed of a nucleus at the center, made up of protons and neutrons, surrounded by electrons in orbitals. The space between these particles within an atom is not filled with dark matter. The majority of the volume of an atom is actually empty space, with the electrons occupying specific energy levels or orbitals around the nucleus.
While dark matter is thought to be distributed throughout the universe, including in galaxies and galaxy clusters, it does not fill the spaces within atoms. Its presence is inferred through its gravitational effects on visible matter, such as the rotation curves of galaxies and the gravitational lensing of light.