# In which one of the following pairs,the species have similar geometry

$\begin{array}{1 1}(a)\;CO_2\;and\;SO_2&(b)\; CO_3^{2-}\;and\;SO_3^{2-}\\(c)\;SO_4^{2-}\;and\;ClO_4^-&(d)\;PH_3\;and\;BH_3\end{array}$

The geometry of $CO_2$ is linear.$(O=C=O)$
The geometry of $SO_2$ is v-shape
The geometry of $CO_3^{2-}$ is trigonal planar.
The geometry of $SO_3^{2-}$ is pyramidal shape
The geometry of $SO_4^{2-}$ is tetrahedral
The geometry of $ClO_4^-$ is tetrahedral
The geometry of $NH_3$ is pyramidal shape
The geometry of $BH_3$ is trigonal planar
Hence (c) is the correct answer.