Question

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What happens when nitrogen fills its valence shell?

Answer 1

What happens when nitrogen fills its valence shell is that 3 electron are gained creating N3- ion

calculation

• According to octet rule atom tend to have a total of 8 electrons in its valence shell

• Nitrogen is a non metal which is in atomic number 7.

• The electron configuration of nitrogen is 1S2 2S2 2P3 or [He] 2S2 2P3 or 2.5..

• from the electron configuration above Nitrogen has 5 valence electrons, therefore it require to gain 3 electron in order to fill its valence shell.
• when 3 electrons are gained Nitrogen create N3- ion.

Answer 2

Atomic number of nitrogen is 7. Thus the electronic configuration of nitrogen is 1s2 2s2 2p3.

The valence shell, is the outermost shell of an element. Nitrogen has 5 electrons in its valence shell (n = 2).

Now, when gains 3 electrons to fill its outermost shell, it complete its octet. And when any system completes its octet, it becomes stable.