Group 13 (Boron Group) Elements

Boric acid with calcium fluoride in presence of concentrated ${\mathrm{HNO}}_3$ to form boron trioxide.

Boric acid with calcium fluoride in presence of concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ to form boron trioxide.

$3{\mathrm{CaF}}_2+3{\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{B}{\left(\mathrm{OH}\right)}_3\to ?$

Complete the above reaction.

What happens when boric acid reacts with calcium fluoride in presence of concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$.

What are the metal borides?

 Boron is the most electronegative partner in metal borides. 

Explain metal borides.

${\mathrm{B}}_2{\mathrm{H}}_6+2 \mathrm{NaH}\stackrel{{\left({\mathrm{C}}_2{\mathrm{H}}_5\right)}_2\mathrm{O}}{\to }$_____.

Choose from the following:

A: $2 {\mathrm{NaBH}}_4$

B: ${\mathrm{NaBH}}_4$

Diborane reacts with sodium hydride in the presence of ether to give tetrahydridoborates.

Write the chemical reaction of diborane with sodium hydride in the presence of ether.

${\mathrm{B}}_2{\mathrm{H}}_6+2 \mathrm{LiH}\stackrel{{\left({\mathrm{C}}_2{\mathrm{H}}_5\right)}_2\mathrm{O}}{\to }?$

Complete the above reaction.

${\mathrm{H}}_3{\mathrm{BO}}_3+{\mathrm{NH}}_3\stackrel{∆}{\to }?$

Complete the above reaction.

Write a short note on metal borides.

${\mathrm{B}}_2{\mathrm{H}}_6\underset{\mathrm{U}-\mathrm{tube}}{\overset{388 \mathrm{K}}{\to }}?$

Complete the above reaction.

Write a chemical reaction of heating of diborane at $388 \mathrm{K}$.

Diborane forms decaborane on heating at $373 \mathrm{K}$.

Hydroboration is a process that produces organoborane compounds.

Hydroboration is a process in which the addition of carbon-hydrogen bond takes place.

Explain. What is hydroboration?

Write the reaction of diborane with air.