Answer:
Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Ca^2 , Al^3 ,I^-,S^2-
Step-by-step explanation:
1)Formula of calcium iodide:
The compound of Ca^2+ and I^-1:
![CaI_2](https://img.qammunity.org/2022/formulas/chemistry/college/sudml1s1nhqf225ld0o14upzj1d6hkcfwo.png)
2) Formula of calcium sulfide:
![CaS](https://img.qammunity.org/2022/formulas/chemistry/high-school/jwiz2hz57nzxlt0u2jqmxr0sy2eqifvaog.png)
3) Formula of aluminum iodide:
![AlI_3](https://img.qammunity.org/2022/formulas/chemistry/college/oozm62rf3s6eeka5ppqe2o92et9tykq9xl.png)
4) Formul aluminum sulfide:
![Al_2S_3](https://img.qammunity.org/2022/formulas/chemistry/college/s96w78i5gsgi9vqbqj1lwnjlelpfcjt04l.png)
These are the four ionic compounds that are formed.