Answer :

Only CS2 and 2CO3 adhere to the octet rule, and the others all do not.

What are the octet rule's four exceptions?

Too few electrons exist in hydrogen, beryllium, and boron for them to form an octet. There is just one location where hydrogen may make a bond with another atom and only one valence electron. Beryllium can only establish electron pair bonds in two places since it only has two valence atoms.

What substances are permitted to defy the octet rule?

Hydrogen, beryllium, and boron do not contain enough electrons to form an octet. In hydrogen, there is just one valence electron, and there is only one place where it can bond to another atom.

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