The chemical symbol of magnesium (Magnesium) is Mg, and the chemical symbol of fluorine (Fluorine) is F. The outermost layer of magnesium atoms has 2 electrons, and it is easy to lose these 2 electrons to form a cation with 2 units of positive charge (Mg ² 🥰); the outermost layer of fluorine atoms has 7 electrons, and it is easy to get 1 electron to form an anion with 1 unit of negative charge (F). In order to achieve charge balance, 1 magnesium ion will combine with 2 fluorine ions, so the chemical formula of the compound composed of magnesium and fluorine is MgF ².

The following describes this chemical knowledge in classical Chinese form:

Magnesium, the essence of chemistry, its symbol is Mg. Fluorine is also the essence, and its symbol is F. The atom of magnesium has two electrons in the outermost layer, and the sex likes to lose these two electrons, so it becomes a cation, with two units of positive charge, that is, Mg ². The atom of fluorine has seven electrons in the outermost layer, and often wants to get one electron, so it becomes an anion, with one unit of negative charge, which is F. Yin and yang are combined, and the charge is flat. A magnesium ion must combine with a difluoride ion, so the chemical formula of the compound formed by magnesium and fluorine is MgF.