Determine the valence of chemical elements in the following substances NH2 P203 CrO3 H2S HCL FeCl2 SO3.

univerkov | November 18, 2020 | education

Let us determine the valence of chemical elements in the following substances: NH2 (nitrogen valence 2, hydrogen valence equal to 1), P203 (phosphorus valence equal to 3, oxygen valence equal to 2), CrO3 (chromium valence equal to 6, oxygen valence equal to 2), H2S (sulfur valence = 2, hydrogen valence 1), HCL (hydrogen valence 1, chlorine valence 1) FeCl2 (iron valence 2, chlorine valence 1), SO3 (sulfur valence 6, oxygen valence 2).

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.