Answered

1. Draw diagrams to explain how the structure of an atom of calcium is different from an ion of calcium.

2. How many ions of chlorine react with one ion of calcium to form calcium chloride?

3. Write the chemical formula for calcium chloride.

4. Write the chemical formula for calcium oxide.



Answer :

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Final answer:

Explanation of the differences between calcium atom and ion structures, the formation of calcium chloride, and the chemical formulas of calcium chloride and calcium oxide.


Explanation:

Calcium Atom vs. Calcium Ion Structure: The calcium atom contains 20 protons and 20 electrons, with a radius of 197 pm, while the calcium ion (Ca²+) has 20 protons, 18 electrons, and a radius of 99 pm due to the loss of 2 electrons, resulting in a smaller size.

Reaction of Calcium Chloride: One calcium ion reacts with two ions of chlorine (Cl⁻) to form calcium chloride (CaCl₂).

Chemical Formulas: The chemical formula for calcium chloride is CaCl₂, and for calcium oxide, it is CaO.


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