## Oxidation number of H

Althea Zhao 1B
Posts: 101
Joined: Mon Jun 17, 2019 7:24 am

### Oxidation number of H

When is the oxidation number of hydrogen -1? For this course, should we just assume that it is +1?

Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

### Re: Oxidation number of H

For the large part of this course, if the hydrogen is bonded to an anion, then we would assume that the oxidation number for the hydrogen is +1. However, in the case of metal and salt hydrides, like LiH or CaH2, since it is bonded to a cation, hydrogen would have an oxidation number of -1.

Hui Qiao Wu 1I
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

### Re: Oxidation number of H

I was taught that if hydrogen is bound to a metal, it's -1; if bound to a nonmetal, it's +1.

Ashley Nguyen 2L
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Joined: Sat Aug 17, 2019 12:18 am
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### Re: Oxidation number of H

Generally, H has a charge of +1. This is true when it acts as a cation or when it is bound to a nonmetal. H will have a charge of -1 only when it is bonded to a cation/metal.

vanessas0123
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

### Re: Oxidation number of H

Most of the time H has a charge of +1. However, when its bonded to a cation or a metal, it will have a charge of -1.

Gabriella Bates 2L
Posts: 113
Joined: Thu Jul 11, 2019 12:15 am

### Re: Oxidation number of H

Hydrogen typically has an oxidation number of +1, but has an oxidation number of -1 when bounded to a cation or a metal.

SVajragiri_1C
Posts: 115
Joined: Thu Jul 11, 2019 12:16 am

### Re: Oxidation number of H

When hydrogen is in a compound with elements that are less electronegative than it, like a cation or a metal, then its oxidation number will be -1.