MCQ
Which of the following outer electronic configuration represents argon
- A$n{s^2}$
- ✓$n{s^2}n{p^6}$
- C$n{s^2}n{p^5}$
- D$n{s^2}n{p^4}$
✓
Answer
Correct option: B.
$n{s^2}n{p^6}$
b
Outer electronic configuration represents argon $ns ^2, np ^6$.
Outer electronic configuration represents argon $ns ^2, np ^6$.
Atomic no. of argon is $18$. Its electronic configuration will be $1 s^2 2 s^2 2 p^6 3 s^2 3 p^6$.
As the outermost shell is full $\left(3 s ^2 3 p ^6\right)$ it is called noble gas.
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