The central atom along with ligands is called____________________?
Correct answer: B. coordination sphere
- A. complex ion
- B. coordination sphere
- C. ligand
- D. complex compound
Explanation
The central metal atom or ion together with the ligands directly attached to it forms the coordination sphere, written inside square brackets. The likely alternative is complex ion, but a complex ion includes the charge of the whole bracketed species, whereas coordination sphere refers specifically to the central unit and its ligands.
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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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