Which of the following molecules do not obey the octet rule in any of the important Lewis structures needed to describe the bonding in the molecule?
A
NO2
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B
AsCl3
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C
SF4
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D
ClO−3
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Solution
The correct options are ANO2 CSF4 DClO−3 NO2 is having only 7 electrons on nitrogen including an odd electron on the central atom. AsCl3 has 8 elctrons on cetral atom so its octet is satisfied. SF4 is having 10 valence electrons, including one lonepair. ClO−3 is also having extended octet on Cl.