Which compound exhibits coordinate covalent bonding in addition to ionic and covalent bonding?
Answer and explanation
Correct answer: A. Ammonium chloride (NH4Cl)
- Step 1: In NH4Cl, the NH4+ ion contains three covalent N-H bonds and one coordinate covalent bond formed by ammonia lone pair donation to H+. Step 2. The NH4+ cation and Cl- anion are bound together by an electrostatic ionic bond. Answer: Ammonium chloride (NH4Cl). Why not the others: Sodium chloride contains exclusively ionic bonding; Methane contains only nonpolar covalent bonds; Water contains only polar covalent bonds.
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