Answer: Cisplatin [cis-Pt(NH3)2Cl2].
- A Cisplatin [cis-Pt(NH3)2Cl2]
- B [Co(NH3)6]Cl3 in routine practice
- C [Fe(CN)6]4- overall in most cases
- D [Cu(NH3)4]2+ under typical conditions
Correct answer: A. Cisplatin [cis-Pt(NH3)2Cl2]
Explanation: Cisplatin (cis-diamminedichloroplatinum(II)) crosslinks DNA strands in cancer cells, inhibiting replication.
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.