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The laboratory method of of preparation of \mathrm{B_2H_6} is

Option: 1

\mathrm{2 BCl _{3}+6 H _{2} \xrightarrow{{ Electric\ Discharge }} B _{2} H _{6}+6 HCl}


Option: 2

\mathrm{2 BF _{3}+6 NaH \xrightarrow{ Electric Discharge } B _{2} H _{6}+6 NaF}


Option: 3

\mathrm{2 NaB H _{4}+ I _{2} \xrightarrow{\text { DIGLYME }} B _{2} H _{6}+2 NaI + H _{2}}


Option: 4

\mathrm{4 BF _{3}+3 LiAl H _{4} \rightarrow 2 B _{2} H _{6}+3 LiF +3 AlF_{3 }}


Answers (1)

best_answer

As we have learnt,

Diborane can be prepared by the oxidation of sodium borohydride with Iodine

\mathrm{2NaBH_{4}+I_{2}\xrightarrow{Polyether}B_{2}H_{6}+2NaI+H_{2}}

Hence, the correct answer is Option (3)

Posted by

Ritika Jonwal

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