(i) A molecule containing a single covalent bond
(ii) A molecule containing a double covalent bond
(iii) A molecule containing a triple covalent bond
(iv) A compound containing an ionic bond
(i) one example of a molecule containing a single covalent bond is hydrogen.
(ii) one example of a molecule containing a double covalent bond is oxygen.
(iii) one example of a molecule containing a triple covalent bond is nitrogen.
(iv) one example of a molecule containing an ionic bond is sodium chloride.