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  4. Assertion: Sodium formate has both the C - O bonds have same value 1.27 mathringA. Reason: Equal bond length is due to the phenomenon of resonance.

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Q. Assertion: Sodium formate has both the $C - O$ bonds have same value $1.27\, \mathring{A}$.
Reason: Equal bond length is due to the phenomenon of resonance.

AIIMSAIIMS 2009Aldehydes Ketones and Carboxylic Acids

Solution:

Formate ion shows resonance and gives rise to identical bond lengths.

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