5+
Nitrogen(II) oxide can be produced by oxidation of NO, dehydration of HNO3, thermal decomposition of nitrates etc.
Au + 4 HCl + HNO3 -----> HAuCl4 + NO +2 H2O
HNO3
N2O is the compounds with the highest amount of nitrogen than the srno32, nh4no3 and hno3.
The chemical name for HNO3 is Nitric Acid.
The oxidation state of N in HNO3 is +5. Oxygen is -2 and H is +!.
No. HNO3 already has hydrogen and nitrogen in their highest possible oxidation states.
-3
Nitrogen(II) oxide can be produced by oxidation of NO, dehydration of HNO3, thermal decomposition of nitrates etc.
This is a perfect example of why we have to be so careful about which letters are upper case and which are lower. No stands for nobelium, but as you have also written cl, which should be Cl, I suspect you don't mean nobelium chloride, but NOCl, nitrosyl chloride. If it were NoCl, then the N alone would be meaningless, and the nobelium would have an oxidation state of +1. In NOCl, the nitrogen has an oxidation state of +3.
+5
HNO3
Au + 4 HCl + HNO3 -----> HAuCl4 + NO +2 H2O
Valence state is sometimes used inseaf of the term oxidation state. Sometimes it just means yhe "valency" exhibited by an atom in a molecule. Valency is an old term that describes the number of bonds that an atom has formed in a molecule, for in /HNO3 nitrogen is 5 valent (pentavalent) in ammonia it is 3 valent, trivalent.
N2O is the compounds with the highest amount of nitrogen than the srno32, nh4no3 and hno3.
The name gives the clue. If any chemical is described as '-ous' it has the lower oxidation state. If described as '-ic' , it has the higher oxidation state, Hence Ferrous chloride is 'Iron(II) chloride' ( FeCl2) Ferric chloride is 'Iron(III) chloride' ( FeCl3). Similarly with Nitric Acid and Nitrous Acid ( HNO3/HNO2) Sulphuric acid and Sulphurous Acid (H2SO4/H2SO3)
+1 for H -2 for O +5 for N