Which one of the following is the correct order of oxidation number of Iodine (I) in I2, HI, HIO4 and ICI?

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Q: 52 (NDA-II/2008)

Which one of the following is the correct order of oxidation number of Iodine (I) in I2, HI, HIO4 and ICI?
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question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,4,5,5,4,0,0

keywords: 

{'oxidation number': [0, 0, 1, 2], 'correct order': [0, 0, 2, 0], 'iodine': [2, 1, 1, 1], 'i2': [0, 0, 1, 0], 'ici': [0, 0, 1, 0], 'hio4': [0, 0, 1, 0], 'hi04': [0, 0, 1, 0]}