NEET Chemistry Covalent Bond MCQ Question
Which of the following statements about the octet rule and hybridization are correct?
The octet rule applies universally to all elements in the periodic table.
Elements with less than four valence electrons can have an incomplete octet.
sp2 hybridization involves the formation of two pi bonds.
The octet rule is only applicable to third-period elements and above.
Correct Answer
Detailed Explanation
The octet rule is not universal and primarily applies to second-period elements. Elements with less than four valence electrons, such as B and Be, can indeed have an incomplete octet. sp2 hybridization involves one sigma bond and one pi bond, not two pi bonds. Third-period elements are not limited by the octet rule.
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