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-

Question

Quizplus · Accepted Answer

Ionic bonds form between atoms of opposite charges, where one atom loses electrons (becomes a cation) and another gains electrons (becomes an anion). In choice C, Na+ has lost an electron and has a positive charge (cation), while Cl- has gained an electron and has a negative charge (anion). Therefore, Na+ and Cl- can form an ionic bond. The other choices do not involve atoms of opposite charges. H+ and O are both cations (or both anions), Na+ and K+ are both cations, and PO4- and I2- are both anions.

Which of the Following Combinations of Atoms Would Form Ionic