Chemical Bonding - Result Question 101
####77. Using the VSEPR theory, identify the type of hybridisation and draw the structure of $OF _2$. What are the oxidation states of $O$ and $F$ ?
(1997, 3M)
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Solution:
$$ \begin{aligned} & { } _{\times \times \times}^{\times \times} \underset{\times}{\times \times} \cdot \ddot{O} \cdot{ } _{\times \times \times}^{\times \times}{ } _{\times}^{\times} \ & \text {Electron pair }=P=2+2=4 \ & \text { Hybridisation }=s p^{3} \end{aligned} $$
(iii) $CN^{-}:[: C: \ddot{N}]^{-}$and $\ddot{C}: \bullet \ddot{O}: \quad$ (CO)
(iv) $NCS^{-}:[\because: \stackrel{S}{\bullet} \cdot C:: N]^{-}$and $: \ddot{Cl} \bullet C:: N(ClCN)$
