{:(,"Column - I",,"Column - II"),((A),B_(2)H_(6)+NH_(3)overset("under different")underset("temperatures")rarr,(P),B_(2)H_(6)),((B),2BF_(3)+6LiH rarr,(Q),"Borazine"),((C ),"Two electron four centre bond",(R ),AlCl_(3) ("vapour")),((D),sp^(3)" hybrid orbitals",(S),"Inorganic graphite"):}

{:(,"Column - I",,"Column - II"),((A),B_(2)H_(6)+NH_(3)overset("under

1.	{:(,"Column - I",,"Column - II"),((A),B_(2)H_(6)+NH_(3)overset("under different")underset("temperatures")rarr,(P),B_(2)H_(6)),((B),2BF_(3)+6LiH rarr,(Q),"Borazine"),((C ),"Two electron four centre bond",(R ),AlCl_(3) ("vapour")),((D),sp^(3)" hybrid orbitals",(S),"Inorganic graphite"):}
Answer» Solution :(A) `B_(2)H_(6)+6NH_(3)overset(450 K)underset(-12 H_(2))rarr underset("Inorganic benzene")underset("Borazine (or)")(2B_(3)N_(3)H_(6))overset(Delta)rarr underset("Inorganic graphite")((BN)_(X))` (B)`2BF_(3)+6LiH overset(450 K)rarr underset("Diborane")(B_(2)H_(6))+6LiF` (C ) Two electron three centre bond `to B_(2)H_(6)` (D) `sp^(3)` hybrid orbit also`to B_(2)H_(6), AlCl_(3)` (VAPOUR).