1 Answer | Add Yours
Strontium (Sr) is an alkaline earth metal belonging to Group II of the periodic table. The most stable valency of elements of this group is 2. Bromine (Br), is a halogen having a stable valency of 1. When a compound is formed between any two elements, the ratio of atoms in that compound will be in the cross- ratio of their valencies.
Therefore, in this case, the ratio of valencies of Sr and Br is 2:1, hence, the ratio of the atoms in the compound formed between Sr and Br will be 1:2, and the formula of the chemical compound will be `SrBr_2` .
We’ve answered 319,199 questions. We can answer yours, too.Ask a question