Two elements X and Y react separately with highly electropositve metal to form binary compounds, which upon hydrolysis yield mixture of boranes and silances. X and Y respectively are

Two elements X and Y react separately with highly electropositve metal

1.	Two elements X and Y react separately with highly electropositve metal to form binary compounds, which upon hydrolysis yield mixture of boranes and silances. X and Y respectively are
Answer» B, Si Si, B Al, B B, Al Solution :See COMPREHENSIVE REVIEW in diagonal relationship between B and Si.