In the complex, potassium hexacyanoferrate (III) K3 [Fe(CN)6] the coordination of the Fe is
Correct answer: C. 6
- A. 9
- B. 3
- C. 6
- D. 5
Explanation
Coordination number, also known as ligancy, is the number of atoms, ions, or molecules that a central atom or ion carries in a complex or coordination compound or a crystal as its closest neighbours coordination number of Fe in K3[Fe(CN)6] is 6. Since the Fe atom is surrounded by six cyanide ligands which is mono-dentate, the coordination number is 6.
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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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