The type of bond between copper(II) tetraamine and chlorine in [Cu(NH\(_3\))\(_4\)]Cl\(_2\)

Answer Details

The compound [Cu(NH₃)₄]Cl₂ consists of two distinct parts:

• The complex cation: [Cu(NH₃)₄]²⁺ (copper(II) tetraamine ion)
• The anions: 2 Cl^- (chloride ions)

The question asks about the bond between the complex cation and the chloride ions. The complex cation carries a 2+ charge, and each chloride ion carries a 1- charge. The attraction between these oppositely charged ions is an ionic bond (electrostatic attraction).

It is important to distinguish this from the bonding within the complex ion. Inside [Cu(NH₃)₄]²⁺, each NH₃ molecule donates a lone pair of electrons from nitrogen to the Cu²⁺ ion, forming dative (coordinate) bonds. However, the question specifically asks about the bond between the complex and chlorine, which is ionic.