Which one complex is more stable
Correct answer: B. [Pt(C2O4)2]2-
- A. [Cu(H2O)6]2+
- B. [Pt(C2O4)2]2-
- C. [CuCl]2-
- D. All have the same stability
Explanation
The stability of a coordination complex often depends on the nature of the ligands. Complexes formed with polydentate ligands, which can form chelate rings, are typically more stable than those with monodentate ligands. In this case, the oxalate ion (C2O42-) in [Pt(C2O4)2]2- is a bidentate ligand that forms stable chelate rings with the central metal ion, making this complex more stable. The other options involve monodentate ligands, which do not provide the same level of stability.
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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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