Chemical Bonding And Molecular Structure Ques 109

109. Which structure is linear ?

[1992]

(a) $SO_2$

(b) $CO_2$

(c) $CO_3^{2-}$

(d) $SO_4^{2-}$

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Answer:

Correct Answer: 109.(b)

Solution:

(b) $CO_2$ has $s p$-hybridization and is linear. $SO_2$ and $CO_3^{2-}$ are planar $(s p^{2})$ while $SO_4^{2-}$ is tetrahedral $(s p^{3})$.