Use Lewis theory to determine the chemical formula for the compound formed between Ca and I. A) Ca I B) Ca₂I₃ C) Ca₃I₂ D) Ca I₂ E) Ca₂I

Question

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Calcium (Ca) has two valence electrons and tends to lose them to achieve a stable electron configuration, forming Ca²⁺ ions. Iodine (I) has seven valence electrons and tends to gain one electron to achieve a stable electron configuration, forming I⁻ ions. Therefore, one Ca²⁺ ion will combine with two I⁻ ions to form the compound CaI₂.

Use Lewis Theory to Determine the Chemical Formula for the Compound