The shape of [Co(NH3)6]3+ complex is:
Correct answer: D. Octahedral
- A. Linear
- B. Square planar
- C. Tetrahedral
- D. Octahedral
Explanation
The cobalt ion is in +3 oxidation state and has an electronic configuration of 3d6. Six pairs of electrons, one from each ammonia molecule, occupy the six hybrid orbitals, hence the molecule is diamagnetic and octahedral in shape.
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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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