A) \[C{{O}_{2}}\]
B) \[CO\]
C) \[S{{O}_{2}}\]
D) \[S{{O}_{3}}\]
Correct Answer: B
Solution :
\[CO\] is not an acid anhydride since carbon forms no oxyacid of \[+2\] oxidation state (oxidation state of carbon in \[C{{O}_{2}}\] is \[+4\]).
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