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Thx for you response.

2007-07-08 02:12:56 · 5 answers · asked by Anonymous in Science & Mathematics Physics

Someone told me it is not 4.
I don't know why can any of you guy can clarify this.

2007-07-08 02:27:49 · update #1

5 answers

Gee and I though it was 4.
Nitrogen has 7 electrons with 5 electrons on its valence shell.
That means it can give away 5 and take 3.
Oxygen has 8 electrons with 6 electrons on its valence shell.
That means it can give away 6 and take 2.

The valence of Nitrogen however is 3 and Oxygen is 2.

Just a little explanation. Valence can be tricky and this is quick, dirty and frequently correct perspective. In 1916 a guy by the name of G. N. Lewis has proposed an idea of an outer valence shell. It is always to contain less or equal to 8 electrons. these electrons will be responsible for chemical bonding between the atoms. Oxygen has 8 electrons (2+6). it needs 2 electrons to complete its valence shell so we say that Oxygen is -2.
Similarly Nitrogen is -3. If you look at the same row where Nitrogen and Oxygen are at it end we find Neon(Ne). Neon has 10 electrons(2+8). Its our shell is full and this is why it is an inert gas. It reacts only with its own atoms.

Oh yes.
In Nitrogen Dioxide case two Oxygen atoms need 4 electrons so they share 3 Nitrogen electrons and one among themselves.
For more information see reference [4] below.

2007-07-08 02:23:50 · answer #1 · answered by Edward 7 · 1 0

The valency of Oxygen is often -2 and because those are all molecules, their entire valency = 0 NO N - 2 = 0 N = +2 N2O 2N -2 = 0 2N = 2 N = +a million NO2 N - 4 = 0 N = +4 N2O5 2N -10 = 0 2N = 10 N = +5

2016-12-10 05:35:12 · answer #2 · answered by carra 4 · 0 0

Valency Of Nitrogen

2016-10-18 02:45:57 · answer #3 · answered by ? 3 · 0 0

Nitrogen has variable valency. It can be 3 or 5, depending upon the other bonding atoms. But in case of NO2, we have N+4 and O-2, so the valency of Nitrogen in nitric oxide is ''4''.
The 4 oxidation number in NO2 therefore makes the compound unstable. (therefore it comes with an unusual brown colour)

2007-07-08 02:43:11 · answer #4 · answered by Merajzai 2 · 0 0

You'll get better answers to your chemistry question if you ask them on the chemistry board.

2007-07-08 10:15:01 · answer #5 · answered by Anonymous · 0 0

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