What states can solutes be in a solid solution?

In a solid solution, solutes can be in a solid state, typically as atoms, ions, or molecules that are incorporated into a host lattice structure. They can exist in two forms: substitutional solid solutions, where solute atoms replace host atoms, and interstitial solid solutions, where solute atoms occupy the spaces (interstices) between host atoms. These states allow for various properties and behaviors in materials, such as changes in strength, ductility, and electrical conductivity.