Question

two pure elements react to form a compound. one element is an alkali metal, x, and the other element is a halogen, z. which of the following is the most valid scientific claim that can be made about the compound?
a it has the formula xz₂.
b it does not dissolve in water.
c it contains ionic bonds.
d it contains covalent bonds.

Explanation:

Alkali metals (X) have a +1 charge. Halogens (Z) have a -1 charge. Using the criss - cross method for ionic compounds, the formula would be \(XZ\) (since \(+1\) and \(-1\) balance each other). Ionic compounds contain ionic bonds. Most ionic compounds dissolve in water.

Answer:

C. It contains ionic bonds.