JEE Main 2022 — p Block Elements (Group 13 & 14) Question with Solution

${\mathrm{B}}_2{\mathrm{H}}_6$ have $\mathrm{four} 2\mathrm{c}-2\mathrm{e}$ bonds and $\mathrm{two} 3\mathrm{c}-2\mathrm{e}$ bonds. Bridging bonds have larger bond length than terminal bonds. Angle between terminal bonds is more than angle between bridging bonds if all $4$ terminal bonds are in one plane then bridging bonds are in perpendicular plane.

$3{\mathrm{NaBH}}_4+4{\mathrm{BF}}_3\underset{450 \mathrm{K}}{\stackrel{\mathrm{ether}}{⟶}}3{\mathrm{NaBF}}_4+2{\mathrm{B}}_2{\mathrm{H}}_6$

Therefore we can say that only statement (C) and (D) are correct.