Chemistry - Complete Pblock- Question with Solution | TestHub

(A) Having${\left[{\mathrm{B}}_4{\mathrm{O}}_5{\left(\mathrm{O}\mathrm{H}\right)}_4\right]}^{2-}$tetra nuclear (boron) unit.
(B) All boron atoms not in same plane.
(C) Two boron are$\mathrm{s}{\mathrm{p}}^2$hybridised and two boron are$\mathrm{s}{\mathrm{p}}^3$hybridised.
(D) One terminal hydroxide per boron atom is present.