Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts with carbon and dry chlorine to give (B) an carbon monoxide. (B) on reduction with LiAlH_(4) gives (C ) along with LiCl and AlCl_(3). (C ) on reaction with ammonia at 200^(@)C gives (D).In compound (B) :

Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts

1.	Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts with carbon and dry chlorine to give (B) an carbon monoxide. (B) on reduction with LiAlH_(4) gives (C ) along with LiCl and AlCl_(3). (C ) on reaction with ammonia at 200^(@)C gives (D).In compound (B) :
Answer» Boron is `sp^2`hybridised B is TRIANGULAR planar molecule It is a Lewis base DIMER Solution :`4B +3O_(2)OVERSET(700^@C)rarr underset((A))(2B_(2)O_3)` `B_(2)O_3+3C+3Cl_(2) rarrunderset((B))(2BCl_3)+3CO`