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The coordination number of a central metal atom in a complex is determined by

  • Option 1)

      The number of ligands around a metal ion bonded by sigma and pi-bonds both.

  • Option 2)

     The number around a metal ion bonded by pi-bonds

  • Option 3)

    The number of ligands around a metal ion bonded by sigma bonds

  • Option 4)

    The number of only anionic ligands bonded to the metal ion

 

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As we have learned

Ligands -

Ions and molecules bounds to the Central atom/ion in the coordination entity are called ligands.

-The number of atoms of the ligand that are directly bounded to the central metal atom or ion by coordinate bond is known as the coordination number of the metal atom or ion coordination number of metal = number of  bonds formed by metal with ligand .


Option 1)

  The number of ligands around a metal ion bonded by sigma and pi-bonds both.

Option 2)

 The number around a metal ion bonded by pi-bonds

Option 3)

The number of ligands around a metal ion bonded by sigma bonds

Option 4)

The number of only anionic ligands bonded to the metal ion

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