Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Compounds of Boron and Aluminium Single Correct MCQ
Published on: August 12, 2026

Which of the following is electron deficient molecule?

A
B
C
D

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Verified by Experts
The correct answer is:
A

In , each B - atom uses - hybrid orbitals for bonding. Out of - hybrid orbitals,

one orbital is empty. Here, one half filled orbital of B - atoms overlaps with one empty orbitals of other B - atom and half - filled orbital of hydrogen atom resulting in 3 centered two bridge bonds. Thus, these bonds are electron deficient.

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