Q11 of 55 Page 1

Write the state of hybridization, shape and IUPAC name of the complex [Ni(CN)4]2-. (Atomic number of Ni=28)

Electronic configuration of Ni: [Ar]3d84s2


Electronic configuration of Ni2+: [Ar]3d84s0


3d8 4s 4p



CN- is a strong field ligand, so pairing of electrons takes place



There are 4 CN- so the 4 pairs of electrons occupy one ‘d’, one ‘s’ and two ‘p’, hence the hybridization dsp2.



Shape: square planar geometry



IUPAC name: tetracyanonikelate(II)


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