If an Atom has 12 Electrons then if it is a Neutral atom then the Atomic Number of the Atom will be 12.
The Electronic Configuration of Element with Atomic Number 12 will be :
ā 1sĀ² 2sĀ² 2pā¶ 3sĀ²
We can notice from the Electronic Configuration that :
Given atom has 2 electrons in the 1st shell.
ā In the Shell : n = 1
Ā Ā Number of Electrons = 2
In the similar way : Number of Electrons in 2nd shell = 2 + 6 = 8
ā In the Shell : n = 2
Ā Ā Number of Electrons = 8
In the similar way : Number of Electrons in 3rd shell = 2
ā In the Shell : n = 3
Ā Ā Number of Electrons = 2
