MCQ
Stable form of $A$ may be represented by the formula :
- ✓$A$
- B$\ce{A_2}$
- C$\ce{A_3}$
- D$\ce{A_4}$
✓
Answer
Correct option: A.
$A$
The given electronic configuration shows that $A$ represents noble gas because the octet is complete. $A$ is neon which has $10$ atomic number.
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