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Because nitrogen forms a compound with hydrogen called anhydrous ammonia consisting of one nitrogen atom and three hydrogen atoms. Since hydrogen has an oxidation number of one, nitrogen must have an oxidation number of three to make a "neutral" molecule.

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Q: Why is oxidation number 3 for nitrogen?
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Related questions

What oxidation number must be assigned to nitrogen in nitrogen trifluoride to nitrogen triiodide?

In NF3, the element fluorine is more electronegative compared to nitrogen. The oxidation number of F in NF3 is -1. Lets assume then the oxidation number of N is x x + 3(-1) =0 x= +3 Oxidation number of Nitrogen in NF 3 is +3. In NI3, the element fnitrogen is more electronegative compared to iodine. The oxidation number of N in NI3 is -3. Lets assume then the oxidation number of I is y (-3) + 3y) =0 x= +1 Oxidation number of Iodine in NI3 is +1 Oxidation number of Nitrogen in NF 3 is +3. +3, as there is three halogens in each compund, therefore their oxidation number will add up to -3 and so to balance it out, nitrogen must be +3.


What is the oxidation number of N O?

The oxidation number of NO, nitrogen oxide, is +3.


What is the oxidation number of N in CuCN?

Nitrogen's oxidation number is -4.Carbon's oxidation number is +3.The cyanide ion has -1 charge. Nitrogen is in -3 state. By balancing the charges: the oxidation number of carbon is +4.


What is the oxidation number of nitride?

Nitrogen in -3


What is the oxidation number of nitrogen in ammonium?

-3.


What is the minimum oxidation number for nitrogen?

-3


What the oxidation number of Nitrogen?

It depends on the compound. Nitrogen has compounds in which the oxidation numbers range from -3 to +5.


What is ther oxidation number for nitrogen?

It varies on the compound of nitrogen. -3 in nitrides is the most common. But oxidation number up to +5 is possible.


What is the Oxidation number of nitrogen in ammonium nitrite?

+3


What is the oxidation number for nitrogen in dinitrogen trioxide?

+3 for each nitrogen in N2O3


What is the oxidation number of nitrosyl?

Nitrosyl [NO+] has Nitrogen in +3 oxidation state and Oxygen in -2


What is the most common oxidation number of nitrogen?

Nitrogen has an oxidation number of -3. Since it is in group 15, it has 5 valence electrons. It wants to have eight, so it will gain three electrons. Electrons are negative, that's why the oxidation number is negative.