Which is the correct order number for bond length of C -O in CO, CO_(3

1.	Which is the correct order number for bond length of C -O in CO, CO_(3)^(2-) and CO_(2) ?
Answer» `CO_(2) LT CO_(3)^(2-) lt CO` `CO lt CO_(3)^(2-) lt CO_(2)` `CO lt CO_(2) lt CO_(3)^(2-)` `CO_(3)^(2-) lt CO_(2) lt CO` SOLUTION :`CO lt CO_(2) lt CO_(3)^(2-)`

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