Question

What is the chemical formula of calcium chloride?

Answer 1

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➷ It would be CaCl2

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Answer 2

Step-by-step explanation:

Atomic number of calcium is 20 and its electronic configuration is 2, 8, 8, 2. So, to acquire stability it loses 2 valence electrons and hence forms
`Ca^(2+)` ion.

Whereas atomic number of calcium is 17 and its electronic distribution is 2, 8, 7. To attain stability its needs to gain one electron and hence then it forms
`Cl^(-)` ion.

Therefore, when both calcium and chlorine chemically combine together then they will form calcium chloride, that is,
`CaCl_(2)`.

Thus, we can conclude that the chemical formula of calcium chloride is
`CaCl_(2)`.