The wheel is said as the most important and the greatest invention of all times. The most important aspect of a wheel is that it made invention of many other objects easy. It became very easy to move larger objects.
The chemical formula for calcium chloride is CaCl2. Calcium chloride contains one calcium atom that is bound to two chlorine atoms. It has a molecular weight of 110.984.
Why is calcium oxide CaO but calcium chloride is CaCl2? in calcium chloride each calcium atom needs to lose two electrons but each chlorine atom needs to gain only one electron. This means that two chlorine atoms react with every o â¦ ne calcium atom to form calcium chloride. So the formula for calcium chloride is CaCl2. ca = proton number is 20 so the structure would be 2, 8 ,8 ,2 cl = proton number is 17 so the structure would be 2 , 8,7 To make it stable calcium has to lose 2 electrons and chlorine has to gain an electron.