-1, and since there is two, -2.
Na and Cl are chemical elements; NaCl is a chemical compound.
Chlorine is not a metalloid. It is a non metal.
It is equal to zero. In pure elemental form.
Oxidation number is the charge per atom in a compound. Cl2= 2- (Cl= 1-) Cu would have to be 2+ to balance the compound, because there is only one copper atom.
The charge on CrCl3 is 0, since it is a neutral compound. Each Cl ion has a charge of -1, meaning that three Cl ions combine with one Cr ion with a charge of +3 to form the compound with an overall charge of 0.
Well, honey, in a compound like Cl2, each chlorine atom has an oxidation number of 0 because it's a diatomic molecule. But if you're talking about when chlorine forms a compound with something else, then its oxidation number can vary depending on the compound. So, in short, in Cl2, the oxidation number of each chlorine atom is 0. Hope that clears things up for ya, darling!
Cl or Cl2
Oxidation number is the charge per atom in a compound. Cl2= 2- (Cl= 1-) Cu would have to be 2+ to balance the compound, because there is only one copper atom.
Cl2 + 2Cu --> 2CuCl Oxidation reaction is Cu --> Cu+ + 1e Reduction reaction is Cl + 1e --> Cl- Redox reaction is Cu + Cl --> Cu+ + Cl-
Cl2 is chlorine gas. There are two chlorine atoms covalently bonded to each other in a simple molecular structure. The chemical symbol for chlorine, on the other hand, is Cl and the formula for the chloride ion is Cl-.
Cl or Cl2
Chlorine does not have a charge. The element is Cl without a charge, and the molecule is Cl2 without a charge. The chloride ion has a charge of -1.