For each row in the table below, decide whether the pair of elements will form a

Question

For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds. ! element #1 | element #2 | compound formed chemical formula ionic molecular neither ionic molecular neither ionic molecular neither sulfur calcium aluminumcalcium xenon radon

Explanation / Answer

1. CaS (calcium sulfide) . Ionic compound since the electronegativity difference between Ca and S is high.

2. Neither. Both are metals and have high electropositivity, so they don't react.

3. Neither. Both are noble gases and highly unreactive and thus cannot react among themselves.

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