Crystalline boron in small amounts may be obtained by:

Question

Crystalline boron in small amounts may be obtained by:

Crystalline boron in small amounts may be obtained by:
A. reducing `BCl_(3)` with `H_(2)`
B. pyrolysis of `Bl_(3)`
C. thermal decomposition of diborane
D. all of these

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
(a)`2BX_(3)+3H_(2)underset(" or Tantalum")overset("red hot W")to2B+6HX` , (`X=Cl` or `Br`)
(b)`2Bi_(3)underset(" or Tantalum")overset("red hot W") to 2B+3l_(2)` , (Van Arkel method)
(c )`B_(2)H_(6)overset(Delta)to2B+3H_(2)`

4 views Answered 2023-02-05 15:29