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As ozone transitions from solid to liquid to gas, what is the notable color change?(a) Pale blue to violet to deep blue(b) Violet to pale blue to deep blue(c) Deep blue to violet to pale blue(d) Violet to deep blue to pale blueI have been asked this question in semester exam.The above asked question is from P-Block Elements topic in portion P-Block Elements of Chemistry – Class 12

Answer»

The correct CHOICE is (d) Violet to DEEP blue to pale blue

Best explanation: Ozone freezes at -192.2°C. When in solid state, it forms a violet-black STRUCTURE. After melting, the color transitions to deep blue. Finally, as it is everywhere seen in the sky, ozone gas is pale blue.



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