Which of the following is more stable:
Correct answer: B. [Pt(C₂O4)2]-2
- A. [Cu(H₂O6)]+2
- B. [Pt(C₂O4)2]-2
- C. [CuCl]-2
- D. All have the same stability
Explanation
Complexes with polydentate ligands are more stable because they form chelate rings. Here, oxalate is bidentate, so [Pt(C2O4)2]-2 is more stable than complexes with monodentate ligands.
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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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