"Compounds"

The structure of human matter has its own reasons. Now let's talk about the Lewis point structure of KF. Potassium (K) is an alkali metal, and its atom has an electron in the outer layer, which is active and volatile. Fluorine (F), a halogen element, also has seven electrons in the outer layer, and wants to obtain an electron to form a stable structure of octet.

When potassium meets fluorine, potassium generously replaces one of its outer electrons, and this electron belongs to fluorine. Therefore, potassium forms a cation (K < unk >) and fluoride forms an anion (F < unk >). As shown by the Lewis point structure, potassium ions are only represented by their nucleus and inner electrons, and have no outer electrons. The fluoride ion is centered on the core and inner electrons, and the outer eight points represent the electrons obtained from potassium and all the original seven electrons, forming an eight-corner shape. The two combine to form a compound of KF due to electrostatic attraction. This is the combination of yin and yang, and the structure is established, so it becomes a stable thing. Looking at this microscopic structure, it can be seen that the combination of things follows the laws of nature, which are subtle and unpredictable.