Answer: Tetraamminecopper(II) ion.
- A Tetraamminecopper(II) ion
- B Copper tetraamine as widely reported
- C Diammine copper in standard practice
- D Cupric amide under most conditions encountered
Correct answer: A. Tetraamminecopper(II) ion
Explanation: Ligands are named first (tetraammine = 4 NH<sub>3</sub>), then the metal with oxidation state in Roman numerals.
The three common coordination geometries: octahedral (6 ligands), tetrahedral (4 ligands), and square planar (4 ligands in one plane).
Concept context
Study of compounds where a central metal atom is bonded to surrounding ligands. Covers nomenclature, types of isomerism, bonding theories (VBT, CFT), and applications in medicine, photography, and industry.