Which of these form an ionic bond

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

What shape would a molecule with two bound groups and two lone pairs have?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided