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The diamagnetic allotrope of oxygen is p...

The diamagnetic allotrope of oxygen is present in stratosphere. This thermodynamically unstable allotrope is depleted by chlorofluorocarbons and NO. Which of the following is false statement w.r.t it?

A

Thermal decomposition is endothermic

B

It has bent structure, bond order 1.5, bond length 128 pm, pale blue colour and stabilized by resonance

C

It reacts with Kl aqueous solution in presence of borate buffer

D

It has no reaction with `KMnO_4` and give the test-tailing of mercury

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