What is the valence shell electronic configuration of the group 18 element?

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Solution

Group $18$ elements
The group $18$ elements are called “Noble gases ”.
Electronic Configuration: These gases have highly stable $n s^{2} n p^{6}$ electronic configuration.
Elements of 18 group are :
Helium(He) : $1 s^{2}$
Neon(Ne) : $[He] 2 s^{2} 2 p^{6}$
Argon(Ar) : $[Ne] 3 s^{2} 3 p^{6}$
Kryoton(Kr) : $[A r] 3 d^{10} 4 s^{2} 4 p^{6}$
Xenon(Xe) : $[Kr] 4 d^{10} 5 s^{2} 5 p^{6}$
Radon(Rn) : $[Xe] 5 d^{10} 6 s^{2} 6 p^{6}$

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