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

The  elements which bond ionically with barium such that the formula would be written as BaX2 are (B) Chlorine, Iodine, and Fluorine.

Explanation:

Barium being a group 2 element, its ion, barium ion has a charge of 2+. This mean it forms a cation with a 2+. For it to form BaX₂ it requires X to be an element ready to receive an ion charge of -1 to complete the outer shell.The elements is this position are Chlorine ion ,Cl⁻, iodide ion ,I⁻ and Fluoride ion ,Fl⁻ to form an ion with no charge (BaX₂). i.e.(2-1-1=0). The elements are therefore Chlorine,Iodine and Fluorine.

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Answer 2

its B on usatestprep