Lithium hydroxide (LiOH) is an ionic compound. It consists of lithium (Li+) and hydroxide (OH-) ions, which are held together by electrostatic forces. The difference in electronegativity between lithium and oxygen atoms results in the formation of ionic bonds. In LiOH, lithium loses one electron to oxygen, resulting in the formation of Li+ and OH- ions. These ions are then arranged in a crystal lattice structure, where they are held together by electrostatic attraction. The ionic nature of LiOH is further supported by its properties, such as its high melting and boiling points, solubility in polar solvents, and ability to conduct electricity in aqueous solutions.