P-Block Elements Ques 530
Question: The correct order of increasing $ C-O $ bond length of $ CO,CO_2 $ and $ CO_3^{2-} $ is:
Options:
A) $ CO_3^{2-}~<CO_2<CO $
B) $ CO_2<CO_3^{2-}<CO $
C) $ CO<CO_3^{2-}<CO_2 $
D) $ CO<CO_2<CO_3^{2-} $
Show Answer
Answer:
Correct Answer: D
Solution:
Structures of CO, $ CO_2 $ and $ CO_3^{2-} $ are: Compound CO $ CO_2 $ $ CO_3 $ Bond order 3 2 1.33 $ Bondorder\propto \frac{1}{Bondlength} $ Hence, the decreasing $ ( C-O ) $ bond length is: $ CO<CO_2<CO_3^{2-} $
