Question

Which elements will bond ionically with barium such that the formula would be written as BaX2?

Answer 1

Explanation:

Barium is a metal and has excess of electrons. Thus, in order to become stable barium will donate its extra electrons to an electron deficient atom. As a result, there will be formation of ionic bond.

Non-metals have deficiency of electrons and thus, they will readily accept electrons from barium in order to complete their octet.  Mostly non-metals have a charge of -1.

Therefore, they will combine with barium to form a compound with formula $BaX_{2}$.

For example, when barium combines with fluorine, the formula will be $BaF_{2}$.

Hence, we can conclude that barium can combine with fluorine, iodine, chlorine, and bromine such that the formula could be written as $BaF_{2}$.

Answer 2

Chlorine, iodine, and fluorine will bond ionically with barium such that the formula would be written as BaX2.