Oxidation Number
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Re: Oxidation Number
Cl has an oxidation number of -1 because it gains one electron to complete its octet when becoming an ion or bonding with another ion.
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Re: Oxidation Number
The oxidation number is the charge of an atom when it is bonded in a molecule. I am not quite sure what example you are pulling this out of, but my guess is that since Cl has a charge of -1, that is its oxidation number. Hope this helps!
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Re: Oxidation Number
Cl has an oxidation number of -1 because Cl has 7 valence electrons and needs to gain one more electron with a charge of -1 to have a full valence shell.
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Re: Oxidation Number
The oxidation number of Cl is -1 because it requires one more electron in order to complete it's octet!! The pattern then goes on when moving to the left of the periodic table!
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Re: Oxidation Number
Chlorine needs one more electron to become the Cl- anion, so this is where that oxidation number comes from.
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Re: Oxidation Number
Chlorine only needs one electron to gain a full octet. Therefore, it has an oxidation number of -1 because it will has a -1 charge in its ionic form.
Re: Oxidation Number
Cl has 7 electrons. It needs one more electron to complete that octet, explaining its oxidation number that corresponds to it.
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Re: Oxidation Number
The oxidation number represents the number of electrons gained or lost to have a full valence shell. Chlorine has 7 electrons, so it only needs to gain one electron (-1 oxidation number) to satisfy the octet rule.
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