What is the nature of the bond between B and O in (C2H5)2OBH3 ?
Covalent
Co - ordinate covalent
Ionic bond
Banana shaped bond
B.
Co - ordinate covalent
Co - ordinate bond is formed .
(C2H5)2O BH3
(C2H5)2O gives one lone pair of electron to BH3 .So it is called electron pair donar and BH3 is called electron pair acceptor .
Following pair is separated by yellow ammonium sulphide :
CdS , Bi2S1
Bi2S3 , PbS
PbS , HgS
CdS , Ag2S3