Which non-metal forms an ionic bond with Barium in which the metal to non-metal ratio is 1:1?

Question

a. Cl

b. O

c. P

d. None of these

Answer 1

Since Ba is in Group 2, it will have a 2+ valence. For an atom to bind in a 1:1 ratio, it would have to have a 2- valence. That would be oxygen (O) in group 16. Barium oxide would be formed, BaO.