JEE Advanced 2024 Paper 2 · Q12 · VSEPR & Molecular Geometry
Among $[Co(CN)_4]^{4-}$, $[Co(CO)_3(NO)]$, $XeF_4$, $[PCl_4]^+$, $[PdCl_4]^{2-}$, $[ICl_4]^-$, $[Cu(CN)_4]^{3-}$ and $P_4$ the total number of species with tetrahedral geometry is _____.
Reveal answer + step-by-step solution
Correct answer:5
Solution
Geometry of each: $[Co(CN)_4]^{4-}$ (Co$^0$, $d^9$ — tetrahedral); $[Co(CO)_3(NO)]$ (Co$^{-1}$ $d^{10}$ — tetrahedral); $XeF_4$ (sp$^3$d$^2$, square planar); $[PCl_4]^+$ (sp$^3$, tetrahedral); $[PdCl_4]^{2-}$ (Pd$^{2+}$ $d^8$, square planar); $[ICl_4]^-$ (sp$^3$d$^2$, square planar); $[Cu(CN)_4]^{3-}$ (Cu$^+$ $d^{10}$, tetrahedral); $P_4$ (tetrahedral). Total tetrahedral = 5.
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