Iupac Nomenclature
The IUPAC name of [Pt(NH₃)₂Cl₂] is:
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- iupac nomenclature
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Diamminedichloridoplatinum(II)
IUPAC naming rules for coordination compounds:
- Ligands are named first in alphabetical order.
- NH3 is called ammine.
- Cl− is called chlorido.
- Alphabetical sequence: ammine before chlorido.
- Numerical prefixes (di,tri, etc.) are used for multiple ligands (but ignored for alphabetizing).
- Two NH3→ diammine; Two Cl−→ dichlorido.
- Central metal follows ligands. Since the complex is neutral, Platinum is used.
- Oxidation state is in Roman numerals: x+2(0)+2(−1)=0⟹x=+2.
- Result: Diamminedichloridoplatinum(II).
This medium difficulty chemistry question is from the chapter coordination compounds, covering the topic of iupac nomenclature. It appeared in the 2025 exam.
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