Question

kindly tell me which elements does not follow octet rule?? its urgent​

Answer 1

Elements like hydrogen, lithium, helium do not obey the octet rule. They can only lose or gain one electron in order to become stable due to which they follow the octet rule. Another exception of octet rule is transition elements. Due to the presence of d-orbitals, they can hold 18 electrons in its outermost shell.

Answer 2

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Ans: The two elements that most commonly fail to complete an octet are boron and aluminium; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rule...

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