p-Block elementsHard

Question

Crystalline boron in small amounts may be obtained by :

Options

A.reducing BCl3 with H2
B.pyrolysis of BiI3
C.thermal decomposition of diborane
D.all of these

Solution

(a) 2BX3 + 3H2 2B + 6HX    (X = Cl or Br)
(b) 2Bl3 2B + 3I2.        (Van Arkel mehod).
(c) B2H6 2B + 3H2.

Create a free account to view solution

View Solution Free
Topic: p-Block elements·Practice all p-Block elements questions

More p-Block elements Questions

Which of the following gives acetylene on hydrolysis :...Select the correct statement (s) from the following...An element (X) forms compounds of the formula XCl3, X2O5 and Ca3X2 but does not form XCl5. Which of the following is the...he following acids have been arranged in the order of decreasing acid strength. Identify the correct order ClOH (I), BrO...NaHSO3 + I2 + H2O → products.Select the correct statement(s) about the product(s)....