A compound having coordination number 6 has geometry:
Correct answer: C. Octahedral
- A. Tetrahedral
- B. Trigonal bipyramidal
- C. Octahedral
- D. Square planar
Explanation
For molecules and polyatomic ions, the coordination number of an atom is determined by simply counting the other atoms to which it is bonded (by either single or multiple bonds). For example, [Cr(NH3)2Cl2Br2]− has Cr3+ as its central cation, which has a coordination number of 6 and is described as hexacoordinate. It can either have hexagonal planar, trigonal prismatic, or regular octahedral geometry.
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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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