Exemplar Problems

Problem 15 : Explain the formation of a coordinate covalent bond in a complex ion, such as the formation of the ammonium ion (NH₄⁺).
Solution :

The formation of the cyanide ion (CN⁻) involves the coordination of a lone pair of electrons from nitrogen (N) to the carbon (C) atom, creating a coordinate covalent bond. In the cyanide ion, the lone pair of electrons on nitrogen is used to form the CN⁻ ion.