The oxidation number of hyrogen is (i) `0` (ii) ` +1` (iii) ` -1` (iv) `+ 1` only.A. (i), (ii), (iii)B. (i), (ii), (iii), (iv )C. (i), (ii)D. (i),(iii)

The oxidation number of hyrogen is (i) `0` (ii) ` +1` (iii) ` -1` (iv)

1.	The oxidation number of hyrogen is (i) `0` (ii) ` +1` (iii) ` -1` (iv) `+ 1` only.A. (i), (ii), (iii)B. (i), (ii), (iii), (iv )C. (i), (ii)D. (i),(iii)
Answer» Correct Answer - A Because hydrogen is always univalent , its oxidation number cannot be `+2`. In `H_2` (free, uncombined element), the oxidation number of H is zero. The oxidation number of H in its compounds is usually `+1`, except when it is bonded to highly reactive metals in binary cmpounds (that is, compouns containing two elements ). Here, its oxidation number is `-1`.

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The oxidation number of hyrogen is (i) `0` (ii) ` +1` (iii) ` -1` (iv) `+ 1` only.A. (i), (ii), (iii)B. (i), (ii), (iii), (iv )C. (i), (ii)D. (i),(iii)

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