Chemical Bonding - Result Question 92
####68. A list of species having the formula $X Z _4$ is given below
$XeF _4, SF _4, SiF _4, BF _4^{-}, BrF _4^{-},\left[Cu\left(NH _3\right) _4\right]^{2+},\left[FeCl _4\right]^{2-}$,
$\left[CoCl _4\right]^{2-}$ and $\left[PtCl _4\right]^{2-}$
Defining shape on the basis of the location of $X$ and $Z$ atoms, the total number of species having a square planar shape is
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Solution:
- PLAN This problem includes concept of hybridisation using VBT, VSEPR theory, etc.,
$XeF _4, BrF _4^{-},\left[Cu\left(NH _3\right) _4\right]^{2+},\left[PtCl _4\right]^{2-}$ are square planar as shown below:
$SF _4$ (See-saw) as shown below:
$SiF _4, BF _4^{-},\left[FeCl _4\right]^{2-},\left[CoCl _4\right]^{2-}$ are tetrahedral as shown below:
Hence, correct integer is 4 .
