Chemistry-Covalent Bond
NEET Chemistry Covalent Bond MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about the octet rule and hybridization are correct?
A
The octet rule applies universally to all elements in the periodic table.
B
Elements with less than four valence electrons can have an incomplete octet.
C
sp2 hybridization involves the formation of two pi bonds.
D
The octet rule is only applicable to third-period elements and above.
Correct Answer
Option B
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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