Chemistry - Complete Pblock- Question with Solution | TestHub

Borax$2\mathrm{N}{\mathrm{a}}^{+}\left[{\mathrm{B}}_4{\mathrm{O}}_5\right(\mathrm{O}\mathrm{H}{)}_4{]}^{2-}.8{\mathrm{H}}_2\mathrm{O}$

$\mathrm{s}{\mathrm{p}}^2$hybridised boron atoms only participate in$\mathrm{p}\mathrm{\pi }\text{-p}\mathrm{\pi }$back bonding as they have vacant p-orbitals.