LiF(s) refers to lithium fluoride in its solid state. Lithium fluoride is an ionic compound made up of lithium cations (Li+) and fluoride anions (F-) held together by strong electrostatic forces.
Related terms
Lithium cation (Li+): A positively charged ion that forms when lithium loses one electron.
Fluoride anion (F-): A negatively charged ion that forms when fluorine gains one electron.
Electrostatic forces: Forces of attraction or repulsion between charged particles due to their electric charge.