Q133 / 200 · MHT CET - Medical 2026 (26 April Shift 1) · Chemistry
What is coordination number of central metal ion in cisplatin ?
- A$2$
- Correct answerB$4$
- C$6$
- D$8$
Solution
Cisplatin is cis-diamminedichloridoplatinum(II), with the chemical formula $[Pt(NH_3)_2Cl_2]$.
The central metal ion is $Pt^{2+}$, which is coordinated to two ammonia ($NH_3$) ligands and two chloride ($Cl^-$) ligands.
Since both $NH_3$ and $Cl^-$ are monodentate ligands, the total number of coordinate bonds formed with the central metal ion is $2 + 2 = 4$.
Thus, the coordination number of the central metal ion in cisplatin is $4$.
Answer: $4$
The central metal ion is $Pt^{2+}$, which is coordinated to two ammonia ($NH_3$) ligands and two chloride ($Cl^-$) ligands.
Since both $NH_3$ and $Cl^-$ are monodentate ligands, the total number of coordinate bonds formed with the central metal ion is $2 + 2 = 4$.
Thus, the coordination number of the central metal ion in cisplatin is $4$.
Answer: $4$
Hence, the correct answer is option: 'B'.