Question

Boron can be obtained by various methods but not by ___________________.

• A. Thermal decomposition of $B_2{H}_6$
• B. Pyrolysis of $B{I}_3$ (van Arkel)
• C. Reducing $BC{l}_3$ with $H_2$
• D. Electrolysis of fused $BC{l}_3$

Answer 1

The correct option is D Electrolysis of fused $BC{l}_3$

Electrometallurgy is used for the extraction of highly electropositive metals such as sodium, potassium, magnesium, calcium and aluminum. Boron is not a highly electropositive metal. Hence, boron cannot be obtained by the electrolysis of fused $BC{l}_3$.