use lewis symbols to determine the formula for the compound that forms between each pair of elements: Mg and I, Ca and S, Cs and F?

Question

 use lewis symbols to determine the formula for the compound that forms between each pair of elements: Mg and I, Ca and S, Cs and F?

Answer 1

1. Magnesium ionizes into Mg²⁺.  Iodine ionizes into I^-.  In order to form a stable compound, you would need one magnesium cation and two iodine anions.  The compound would be MgI₂ (magnesium iodide).

 

2. Calcium ionizes into Ca²⁺.  Sulfur ionizes into S^2-.  In order to form a stable compound, you would need one calcium cation and one sulfur anion.  The compound would be CaS (calcium sulfide).

 

3. Cesium ionizes into Cs⁺.  Fluorine ionizes into F^-.  In order to form a stable compound, you would need one cesium cation and one fluorine anion.  The compound would be CsF (cesium fluoride).

 

You would have to draw the Lewis structures of the loss (oxidation) and gain (reduction) of electrons between atoms.  To form these ionic compounds.