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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 one 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. However if you add 2 to 7 in the chlorine it will make 9 so it will still be unstable therefore you need two chlorine atoms to share out the 2 atoms in calcium.

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13y ago
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5mo ago

Calcium oxide, CaO, forms a 1:1 ratio between calcium and oxygen atoms, while calcium chloride, CaCl2, forms a 1:2 ratio between calcium and chlorine atoms. This is due to the charges of the ions involved and the need to balance the charges in the compound.

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Q: Why is calcium oxide CaO but calcium chloride is CaCl2?
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Related questions

What is the balanced equation for calcium oxide added to hydrogen chloride yields calcium chloride added to water?

This equation is CaO + 2 HCl -> CaCl2 + H2O.


What is the balanced equation for the reaction of calcium oxide with hydrochloric acid?

The balanced equation for the reaction of calcium oxide (CaO) with hydrochloric acid (HCl) is: CaO + 2HCl -> CaCl2 + H2O.


When calcium oxide is reacted with chlorine what is formed?

When calcium oxide is reacted with chlorine, calcium chloride is formed along with oxygen gas. The balanced chemical equation for the reaction is: CaO + Cl2 → CaCl2 + O2.


What is formed when calcium oxide was mixed with hydrochloric acid?

When calcium oxide is mixed with hydrochloric acid, the reaction produces calcium chloride and water. The balanced chemical equation for this reaction is: CaO + 2HCl -> CaCl2 + H2O


How do you make anhydrous calcium chloride from calcium oxide?

To make anhydrous calcium chloride from calcium oxide, you would react calcium oxide with hydrochloric acid (HCl). This reaction will yield calcium chloride and water. The water produced in the reaction will need to be removed to obtain anhydrous calcium chloride.


Calcium oxide plus hydrochloric acid?

When calcium oxide reacts with hydrochloric acid, it forms calcium chloride and water. The chemical equation for this reaction is: CaO + 2HCl -> CaCl2 + H2O. Calcium oxide is a strong base that neutralizes the strong acid, hydrochloric acid, to produce a salt and water.


What is formed by CaO Hcl?

When calcium oxide (CaO) reacts with hydrochloric acid (HCl), it forms calcium chloride (CaCl2) and water (H2O) as the products. This is a neutralization reaction where an acid and a base react to form a salt and water.


What is the formula for calcium oxide plus hydrochloric acid to give calcium chloride plus water?

The chemical equation for the reaction is: CaO + 2HCl → CaCl2 + H2O. This equation shows that one molecule of calcium oxide reacts with two molecules of hydrochloric acid to produce one molecule of calcium chloride and one molecule of water.


What does hydrochloric acid and calcium oxide make?

Calcium + water. Chloride Since it is a neutralisation reaction: Acid + metal oxide = salt + water Hydrogen Calcium Calcium Water Chloride + Oxide = Chloride +


Reactants would you use to make calcium chloride plus water?

To make calcium chloride and water, you would react calcium oxide or calcium hydroxide with hydrochloric acid. The reaction would be CaO + 2HCl → CaCl2 + H2O or Ca(OH)2 + 2HCl → CaCl2 + 2H2O.


Calcium reacts with fluorine to form what?

Calcium reacts with fluorine to form calcium fluoride (CaF2).


What is formed by CaO reacts with Hcl?

CaO reacts with HCl to form calcium chloride (CaCl2) and water (H2O).