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

Answer 1

B) Chlorine, Iodine, and Fluorine

Answer 2

chlorine, flurine,and iodine because they have valency1