Which one of the following has a square planar geometry? $\left( {At.{\rm{ }}No.{\rm{ }}Fe = 26,{\rm{ }}Co = 27,{\rm{ }}Ni = 28,{\rm{ }}Pt = 78} \right)$

${\left[ {{\rm{PtC}}{{\rm{l}}_4}} \right]^{2 - }}$

${\left[ {{\rm{CoC}}{{\rm{l}}_4}} \right]^{2 - }}$

${\left[ {{\rm{FeC}}{{\rm{l}}_4}} \right]^{2 - }}$

${\left[ {{\rm{NiC}}{{\rm{l}}_4}} \right]^{2 - }}$

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NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Which one of the following has a square planar geometry?

\left( {At.\mathrm{ }No.\mathrm{ }Fe = 26,\mathrm{ }Co = 27,\mathrm{ }Ni = 28,\mathrm{ }Pt = 78} \right)

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Correct option: D

{\left[ {\mathrm{PtC}{\mathrm{l}_4}} \right]^{2 - }}

Option D ([PtCl4]^2-) is correct because Pt(II) complexes with strong field ligands like Cl- tend to form square planar geometries due to dsp² hybridization.

NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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