Which of the Following Combinations of Atoms Would Form Ionic

Question

Which of the following combinations of atoms would form ionic bonds? A)H^⁺ and O B)Na^⁺ and K⁺ C)Na⁺ and Cl^- D)PO4- and I2^-

Accepted Answer

Ionic bonding occurs when there is a transfer of electrons from a metal to a nonmetal. In option C, sodium (Na) is a metal and chlorine (Cl) is a nonmetal, and they can form ionic bonds by exchanging an electron from Na to Cl. In options A and B, there are no metal/nonmetal combinations. In option D, both PO and I are nonmetals and cannot form ionic bonds.