Question

formula of sulphide of an element M is m2s5. what is the sub-group of this elemnet in periodic table?​

Answer 1

Sulfide (British English sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. A metal M forms an oxide having the formula M2O3. It belongs to third period in the mordern periodic table . ... A metal M forms an oxide having the formula M2O3. That is the valency of metal is 3.