Which of the following can form a chealate______________________?
Correct answer: B. oxalato
- A. ammine
- B. oxalato
- C. carbonyl
- D. cyano
Explanation
Oxalato, C2O4 2−, has two oxygen donor atoms that can bind to the same metal ion and form a chelate ring. The likely alternative is cyanide, but CN− is normally monodentate and binds through only one donor atom.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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