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In Chemistry / High School | 2014-03-31

Which substance does not obey the Lewis octet rule?

a. O₂
b. NO
c. CO
d. N₂

Asked by Mcthay621

Answer (2)

The answer is NO
N has 5 valence electrons O has 6
Therefore combined there is 11 electrons so they will never complete the octet

Answered by justjen | 2024-06-10

The substance that does not obey the Lewis octet rule is b. NO (Nitric oxide), as it has 11 valence electrons, preventing both nitrogen and oxygen from achieving an octet. In contrast, the other options all fulfill the octet rule. NO is an exception due to its uneven number of electrons.
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Answered by Anonymous | 2025-01-03

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