Which of the following set is having correct statements here regarding both B and Al? 1 . They combine with nitrogen to form nitrides 2 . They react with HCl to form chlorides 3 . They burn in oxygen to give oxides at high temperature 4 . Their halides are Lewis acids

Step-by-step solution

Both B and Al can react with nitrogen to form nitride as follows 2 B + N 2 → 2 B N 2 A l + N 2 → 2 A l N Boron is not attacked by HCl; while Al reacts with HCl to from A l C l 3 and H 2 ( g ) . Both B and Al can react with oxygen to form their oxides. 4 B + 3 O 2 → 2 B 2 O 3 4 A l + 3 O 2 → 2 A l 2 O 3 Halides of both ( B X 3 , A l X 3 ) are electron deficient molecule, so they act as Lewis acids.