Per NCERT, what is the OCTET RULE for atomic stability?
AAtoms with 4 valence electrons are always stable
BAtoms with 8 electrons in the outermost (valence) shell are stable — except for K-shell atoms which are stable with 2
CAtoms with 6 electrons in any shell are stable
DAll atoms need 16 electrons to be stable
Answer & Solution
Correct answer: B. Atoms with 8 electrons in the outermost (valence) shell are stable — except for K-shell atoms which are stable with 2
Per NCERT §9.4, octet rule: 8 valence electrons = stable (or 2 for K-shell). The other options misstate.
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