Chemistry - Complete Pblock- Question with Solution | TestHub

${\mathrm{B}}_2{\mathrm{H}}_6$ is electron deficient molecule because boron atom has three half filled orbitals in excited state. The structure of ${\mathrm{B}}_2{\mathrm{H}}_6$ is represented as follows:In it two electrons of a $\mathrm{B}-\mathrm{H}$ bond are involved in formation of three centre bond, these bonds are represented as dotted lines.