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ChemistryGeneral Chemistry

Write the Empirical Formula of at Least Four Binary Ionic Compounds from Fe²⁺, Ni⁴⁺, I⁻, and S²⁻

Find four charge-neutral empirical formulas from Fe²⁺, Ni⁴⁺, I⁻ and S²⁻, with each ion ratio checked and a clear stability boundary.

Question

Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Fe²⁺, Ni⁴⁺, I⁻, S²⁻.

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Evidence boundary

These are charge-balanced empirical formulas for the ions stated in this exercise. Formal charge balance does not establish that each named compound is isolable or stable under ordinary conditions.