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The correct order of increasing C-O bond length of CO, CO3^2- , CO2 is

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The correct order of increasing C-O bond length of CO, CO32- , CO2 is

(a) CO32- < CO2 <CO

(b) CO2 <CO32-  <CO

(c) CO < CO32-  <CO2

(d) CO < CO2 < CO32- 

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Best answer

Correct option (d) CO < CO2 < CO32- 

Explanation:

Bond length ∝1/bond order

Bond order : CO32- < CO2 <CO

Bond order in CO = 3 (with the help of molecular orbital theory) Bond order in CO2.

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