question_answer

Assertion: Carbon-oxygen bonds are of equal length in carbonate ion.

Reason: Bond length decreases with the multiplicity of bond between two atoms.

Read the assertion and reason carefully to mark the correct option out of the options given below:

A)  If both assertion and reason are true and the reason is the correct explanation of the assertion.

B)  If both assertion and reason are true but reason is not the correct explanation of the assertion. [b] \[CO_{3}^{2-}\] shows resonance and thus all the three bonds are of identical bond length.             \[O\underset{\,\,{{O}_{-}}}{\mathop{\underset{|}{\mathop{=C-}}\,}}\,{{O}^{-}}\leftrightarrow {{O}^{-}}\underset{\,{{O}_{-}}}{\mathop{\underset{|}{\mathop{-C=}}\,}}\,O\leftrightarrow {{O}^{-}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-{{O}^{-}}\]

C)  If assertion is true but reason is false.

D)  If the assertion and reason both are false.

E)  If assertion is false but reason is true.