(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
Solution:
Option (b) is the answer.
Covalent bonding is found in non-ionic substances. Because two atoms share a pair of electrons, hydrochloric acid (HCl) and carbon tetrachloride (CCl4) form covalent bonds. Because they contain positive and negative ions, sodium chloride (NaCl) and potassium chloride (KCl) create ionic compounds.