Chemical formula of magnesium sulfite

Chemical formula of magnesium sulfite: MgSO3.

Magnesium sulfite is a magnesium salt of sulfite, and its chemical formula is MgSO3. Its most common hydration form has six water molecules, which makes it MgSO3 _ 3 hexahydrate. 6H2O. When heated above 40 C (104 F), it will dehydrate into magnesium sulfite trihydrate (MgSO3? 3H2O). The anhydrous form is deliquescent, which means that it can easily absorb water from the air.

Writing rules of chemical formula

1. Writing of simple chemical formula:

Write the symbols of the elements that make up a simple substance first, and then write the number of atoms that make up a simple substance molecule with numbers in the lower right corner of the symbol. Rare gases are directly composed of atoms, and their chemical formulas are usually represented by elemental symbols. The structure of metal and solid nonmetallic elements is very complex, and it is customary to use element symbols to represent their chemical formulas.

2. The chemical formula of the compound:

Two rules for writing chemical formulas of compounds:

① Generally, write positive valence elements or atomic groups on the left, negative valence elements or atomic groups on the right, and write the number of atoms or the simplest ratio of atomic numbers in Arabic numerals in the lower right corner of the element symbol.

② The algebraic sum of positive and negative valences in the compound is zero.

Reference to the above content: Baidu Encyclopedia-Magnesium sulfite