Coordination Number of the transition element in [Pt Cl NO2 (NH3)4 ]2?
Correct answer: B. 6
- A. 2
- B. 6
- C. 4
- D. 8
Explanation
The coordination number of a transition metal complex is defined as the number of ligands attached to the central metal atom/ion. In the given complex [PtCl(NO2)(NH3)4]2, platinum (Pt) is the central metal atom, and there are four different ligands attached to it: chloride (Cl-), nitro (NO2-), and four ammonia molecules (NH3).Let's count the number of ligands:1. Chloride (Cl-) contributes 1 ligand.2. Nitro (NO2-) contributes 1 ligand.3. Ammonia (NH3) contributes 4 ligands (there are four NH3 molecules).Therefore, the total number of ligands is 1 + 1 + 4 = 6.The correct answer is (b) 6, as the coordination number is the sum of all ligands attached to the central metal. In this case, the coordination number of the platinum (Pt) in the complex is 6.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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