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How to calculate oxidation state for …

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How to calculate oxidation state for any element?

Posted by Ananya Saw 7 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Kalindi Yadav 7 years, 10 months ago

The oxidation number of a free element is always 0. The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of "H" is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of "O" in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1. The oxidation number of a Group 2 element in a compound is +2. The oxidation number of a Group 17 element in a binary compound is -1. The sum of the oxidation numbers of all of the atoms in a neutral compound is 0. The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

Kalindi Yadav 7 years, 10 months ago

The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1.

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