Make up the chemical formulas of compounds with chlorine (I) of the following elements

| March 12, 2021 | education

Make up the chemical formulas of compounds with chlorine (I) of the following elements (the chlorine symbol in these formulas is put in second place): a) barium b) iron (III)

Chemical formulas of substances are composed according to the valence of the atoms that make up the molecule.

a) The valency of barium is always two. The total multiple of the valencies of barium and chlorine (I) is two. Dividing the common multiple of 2 by the valence of barium (II), we get one barium atom. Dividing the same common multiple of 2 by the valence of the chlorine atom (I), we get two chlorine atoms. Answer: BaCl2.

b) The total multiple of the valences of iron (III) and chlorine (I) is three. Dividing the common multiple of 3 by the valence of iron (III), we get one iron atom. Dividing the same common multiple of 3 by the valence of the chlorine atom (I), we get three chlorine atoms. Answer: FeCl3.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.