p Block ElementshardMCQ SINGLE

Diborane () reacts with at low temperatures to initially form a white ionic solid adduct. Which of tp Block Elements Chemistry Question

Question

Diborane ($B_2H_6$) reacts with $NH_3$ at low temperatures to initially form a white ionic solid adduct. Which of the following correctly represents the ionic formulation of this initial adduct before it converts to borazine?

Answer: B

💡 Solution & Explanation

Diborane undergoes asymmetrical cleavage when treated with small amines like $NH_3$. It initially forms the ionic adduct $[BH_2(NH_3)_2]^+[BH_4]^-$. Upon further heating at higher temperatures, this adduct loses hydrogen to form borazine ($B_3N_3H_6$).

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