Which of the following is an ionic compound? A. CS2 B. MgCl2 C. OF2 D. SO2 Which of the following pairs of elements would most likely form an ionic compound? A. Al and K B. Cl and I C. K and I D. Mg and Al Which of the following is most likely a covalent compound? A. Al2O3 B. CaCl2 C. KF D. SF A polar covalent bond would form in which of the following pairs of atoms? A. Ca - Cl B. Cl - Cl C. Cr - Br D. P - Cl What type of chemical bond holds the atoms together within a water molecule? A. hydrogen bond B. ionic bond C, nonpolar covalent bond D. polar covalent bond