Which of the following is incorrect for ozone ?

Options

A. it is a pale blue gas with a characteristics strong smell
B. it can be liquified (at`-112.4^(@)C` ) to a dark blue liquid and solified (at `-248^(@)C` ) to yield violet black crystals.
C. it is thermodynamically unstable
D. it is paramagnetic is nature

Answer

4

Explanation

Unlike `O_(2)` trioxygen `(O_(3))` is diamagnetic .The colour of `O_(3)` is due to intense absorption of red light `(lambda557and602nm)`. It has a characteristic "metallic" smell and in small concentration rises to above about `100` parts per million breathing becomes uncomfortable and it cause headaches. Ozone is thermodynamically unstable and decomposes to `O_(2)`. The decompositions is exothermic and is catalyzed by many materials.The solid and liquid often decompose explosively. The gas decomposes slowly, even when warmed , providing catalysts and `UV` light are absent.