What is the formula for the ions in the compounds BaSO4 and Li2CO3
BaSO4 has barium ions (Ba2+, Sulfate ions SO42-,
and Lithium carbonate has lithium ions Li1+, and carbonate ions CO32-
Ba ions (might be written as Ba^2+) and sulfate (might be written as SO4^2-).
Li^1- and CO3^2-.
I think the idea behind this question is for the student to realize that the Ba is there as one entity of the ionic bond but the sulfate ion is made up of covalent bonds and it is the other entity. Same kind of thing for the lithium carbonate.
To derive the formula for the ions in the compounds BaSO4 and Li2CO3, we need to identify the charges of the ions involved.
For BaSO4:
Ba is an alkaline earth metal, commonly known as barium, located in Group 2 of the periodic table. As an alkaline earth metal, it typically forms a 2+ cation (Ba2+).
SO4 is the sulfate ion, composed of sulfur and four oxygen atoms. The sulfate ion carries a 2- charge (SO42-).
To determine the formula, we need to balance the charges. Since the barium ion has a 2+ charge and the sulfate ion has a 2- charge, we need two sulfate ions for every barium ion to balance the charges. Therefore, the formula for BaSO4 is Ba2+SO42-.
For Li2CO3:
Li is lithium, located in Group 1 of the periodic table. It typically forms a 1+ cation (Li+).
CO3 is the carbonate ion, composed of carbon and three oxygen atoms. The carbonate ion carries a 2- charge (CO32-).
To determine the formula, we again need to balance the charges. Since the lithium ion has a 1+ charge and the carbonate ion has a 2- charge, we need two lithium ions for every carbonate ion to balance the charges. Therefore, the formula for Li2CO3 is 2Li+CO32-.
The ions in the compound BaSO4 are Ba2+ and SO42-.
The ions in the compound Li2CO3 are Li+ and CO32-.