Question

which elements will bond ionically with barium such that the formula would be written as bax₂? a nitrogen, chlorine, and sodium b chlorine, iodine, and fluorine c hydrogen, bromine and aluminum d oxygen and sulfur

Explanation:

Step1: Determine barium's charge

Barium (Ba) is in Group 2 of the periodic - table and forms a $Ba^{2 + }$ ion.

Step2: Analyze the charge balance for $BaX_2$

For the formula $BaX_2$, the overall compound must be electrically neutral. If $Ba$ has a charge of $+ 2$, then each $X$ must have a charge of $-1$.

Step3: Identify elements with a - 1 charge

Elements in Group 17 (halogens) such as chlorine (Cl), iodine (I), and fluorine (F) form ions with a charge of $-1$ when they react ionically.

Answer:

B. Chlorine, iodine, and fluorine