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The octet rule states that an atom is most stable when its outermost shell has 8 electrons. However, an atom's 3rd principal energy level has 18, which is more than 8. What does this mean?
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The octet rule states that an atom is most stable when its outermost shell has 8 electrons. However, an atom's 3rd principal energy level has 18, which is more than 8. What does this mean?

User Shahzeb Khan
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It is found that last shell of an atom cannot contain more than 8 electrons . the 3rd principal energy levels last shell cannot contain more than 18 electrons
User Phcaze
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