p-Block Elements-I 1 Question 15
15. In the reaction, $2 X+\mathrm{B}{2} \mathrm{H}{6} \longrightarrow\left[\mathrm{BH}{2}(X){2}\right]^{+}\left[\mathrm{BH}_{4}\right]^{-}$ the amine(s) $X$ is/are
(2009)
(a) $\mathrm{NH}_{3}$
(b) $\mathrm{CH}{3} \mathrm{NH}{2}$
(c) $\left(\mathrm{CH}{3}\right){2} \mathrm{NH}$
(d) $\left(\mathrm{CH}{3}\right){3} \mathrm{~N}$
Assertion and Reason
Read the following questions and answer as per the direction given below:
(a) Statement I is correct; Statement II is correct Statement II is the correct explanation of Statement I
(b) Statement I is correct; Statement II is correct Statement II is not the correct explanation of Statement I
(c) Statement I is correct; Statement II is incorrect
(d) Statement I is incorrect; Statement II is correct
Show Answer
Answer:
Correct Answer: 15. (a)
Solution:
- Diborane $\left(\mathrm{B}{2} \mathrm{H}{6}\right)$ undergoes unsymmetric cleavage with $\mathrm{NH}{3}$, primary and secondary amine while tertiary amine brings about symmetrical cleavage of $\mathrm{B}{2} \mathrm{H}_{6}$ as :
