Which of the following can form a chelate?
Correct answer: B. oxalato
- A. Ammine
- B. oxalato
- C. carbonyl
- D. cyano
Explanation
A chelate is a complex in which a central metal ion is bonded to the same ligand at multiple points.The oxalate ion (C₂O₄²⁻) has two oxygen atoms with lone pairs of electrons, and both oxygen atoms can coordinate to a metal ion, forming a chelate
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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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