which is odd
oxygen
ozone
chlorine
nitrogen
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Ozone; Ozone, O3, is a form of oxygen; a blue gas with a pungent odor noticeable when gas is formed by an electrical discharge. ... Ozone; Ozone, or Ov3, is caused when sunlight falls on nitrogen dioxide and causes it to break into NO and a free oxygen atom. The free atom then binds with 0v2 and forms ozone.
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Answer:
chlorine
Explanation:
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