please guys help me in this question it is my board question please help me.
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Valence Electron
No. of electrons left to complete an octet and the element to become stable is called valence electron.
For example
Atomic number of Beryllium is 4
No.Electron capacity of K shell is 2
No. electron capacity of L shell is 8
Explanation:
So there will be 2 electron in 1st shell.
There will be 2 electrons in 2nd shell but it's capacity is 8 .Therefore it will prefer giving 2 electrons instead of taking 6 to become stable.It's octet will be completed.
So it's valency is 2
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