Question

Derive the chemical formula for calcium chloride.

Answer 1

1. Step 1 – Write the symbols of calcium and chlorine side by side. Ca Cl
2. Step 2 – Write the valencies of calcium and chlorine above their symbols to the right. Ca² Cl¹.
3. Step 3 – Interchange the valencies of elements. Ca Cl₂.
4. Thus the chemical formula for calcium chloride is CaCl2.