Question

element #1 element #2 compound formed? chemical formula lithium barium ionic molecular neither cesium calcium ionic molecular neither magnesium iodine ionic molecular neither

Explanation:

Step1: Determine compound type

Ionic compounds form between metals and non - metals. Molecular compounds form between non - metals. Lithium and barium are metals (no non - metal for ionic, no two non - metals for molecular). Cesium and calcium are metals (no non - metal for ionic, no two non - metals for molecular). Magnesium is a metal, iodine is a non - metal (ionic compound).

Step2: Write chemical formula for ionic compound

Magnesium has a \(+ 2\) charge (\(Mg^{2+}\)), iodine has a \(-1\) charge (\(I^{-}\)). Using the criss - cross method, the formula is \(MgI_{2}\).

Answer:

element #1	element #2	compound formed?	chemical formula
cesium	calcium	neither
magnesium	iodine	ionic	\(MgI_{2}\)