Question

Assertion (A) : When diborane is heated with $N{H}_3{200}^{0}C,$ borazole is obtained :
Reason (R): Borazole is known as inorganic benzene :

• A. Both A and R are true and R is correct
  explanation of A
• B. Both A and R are true and R is not correct
  explanation of A
• C. A is true but R is false
• D. A is false but R is true.

Answer 1

Answer: (B)

Both A and R are true and R is not correct

explanation of A
$B_2{H}_6+2N{H}_3\stackrel{{120}^{0}C}{\to }{B}_2{H}_6.2N{H}_3\stackrel{{200}^{0}C}{\to }\underset{Borazole}{B_3{N}_3{H}_6}\stackrel{>{200}^{0}C}{\to }3(BN{)}_n+3n{H}_2$
Borazole is also called borazine or inorganic benzene as its structure is very similar to benzene, with boron and nitrogen alternatively arranged instead of carbon and coordinate bond from nitrogen to boron instead of carbon-carbon double bond.