Question

Boron is a fairly rare element. However, it has many important applications. It is a non-metal and has a very high melting point of ${2180}^{\circ }$C. It is extracted from borax and forms a large number of electron deficient compound.
Select the correct statement(s)

• A. Boron can form $B{F}_6^{3-}$ ion
• B. Amorphous boron may be obtained by the reduction of $B_2{O}_3$ at high temperature using sodium or magnesium
• C. $B_2{O}_3$ is a basic oxide
• D. Crystalline boron may be obtained by thermal decomposition of diborane $\left(B_2{H}_6\right)\text{or}B{I}_3$

Answer 1

Answer: (B), (D)

Crystalline boron may be obtained by thermal decomposition of diborane $\left(B_2{H}_6\right)\text{or}B{I}_3$

$B{F}_6^{–}$ not exist.
$B_2{O}_3$ is acidic oxide.