Which of the following statement is true about the complex [CrCl3(OH)2(NH3)]^2- ion? — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Identify that K[PtCl3(C2H4)] is Zeise's salt, which contains Pt(II) coordinated to three chloride ligands and one ethylene molecule (coordination number = 4). Step 2: Pt(II) is a 5d^8 transition metal ion. In 5d elements, crystal field splitting is exceptionally large, forcing a low-spin square planar configuration. Step 3: A low-spin d^8 configuration with coordination number 4 results in dsp^2 hybridization and a square planar structure.