alleryAccording to the octet rule, atoms achieve stability by attaining an outer shell configuration of:
Ans² np²
Bns² np⁴
Cns² np⁶
Dns¹ np⁵
Answer & Solution
Correct answer: C. ns² np⁶
The octet rule states atoms achieve stability by attaining a noble-gas outer shell of **eight valence electrons (ns² np⁶)**.
Helium is the exception with a duplet.
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