if-element-a-reacts-with-element-b-resulting-in-a-product-containing-a2-and-b-io

Question

If the reaction of A and B resulted in $$A^{2+}$$ and $$B^{−}$$ ions, A and B come from what groups of the periodic table?

Accepted Answer

A: Group 2AB: Group 7A

Answer

A: Group 6AB: Group 7A

Answer

A: Group 2AB: Group 6A

Answer

A: Group 7AB: Group 2A

If the reaction of A and B resulted in A2+ and B− ions, A and B come from what groups of the periodic table?