Chemical Bonding and Molecular Structure - Result Question 60
####61. Which of the following is not isostructural with $SiCl_4$ ?
(a) $SO_4{ }^{2-}$
(c) $NH_4^{+}$
(b) $PO_4{ }^{3-}$
(d) $SCl_4$
[2006]
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Solution:
- (d) In $SiCl_4$ there is $s p^{3}$ hybridisation, so the structure is tetrahedral. In $SO_4{ }^{2-}, PO_4{ }^{3-}, NH_4{ }^{+}$ the structure is tetrahedral with $s p^{3}$ hybridisation. But in $SCl_4, s p^{3} d$ hybridisation is present, so its shape is different i.e., see saw.
