Inorganic Acid

Inorganic acids, also known as mineral acids, are a general term for acids in Inorganic Compounds. Inorganic acids, in general, are inorganic compounds that can dissociate hydrogen ions. A compound consisting of hydrogen and a non-metallic element or a group thereof. For example, hydrochloric acid (HCl), nitric acid (HNO3), boric acid (H3BO3), sulfuric acid (H2SO4), carbonic acid (H2CO3), phosphoric acid (H3PO4) and the like.

According to the composition, inorganic acids can be divided into oxygen-containing acids, anaerobic acids, complex acids, mixed acids, superacids, etc., according to the degree of dissociation, can be divided into strong acids and weak acids, but also according to the number of hydrogen ions in the molecule can be ionized into monobasic acids, dibasic acids and polyacids.

Inorganic acids are mostly used to provide hydrogen ions.

Inorganic acids are divided into inorganic hydrogenic acids and inorganic oxygenated acids according to their composition. 
The general formula of hydroic acid is MHm, the structure is relatively simple, it is some hydride of the periodic table, the group of elements. They are in an aqueous solution, can give protons, appear acidic.
For hydrogenic acid, the higher the electronegativity of its central atom M, the stronger the ability to attract electrons, the easier it is to give protons, and the stronger its acidity. For the same cycle, as the family of M changes, the electronegativity of M gradually increases in the sequence, and the acidity of its corresponding MHm is gradually enhanced.
Contains grade acids
The general formula for oxygenated acids is XOm(OH)n, where X is the central atom.
The structure of the oxygenated acid is more complex than that of the hydroacid, and its structure is related to the number of cycles in which the central atom X is located. In the second cycle, H3BO3,H2CO3, HNO3, and BO32-, CO32-,NO3- are planar structures that contain out-of-bound π bonds.