Explain why NH3 is basic while BiH3 is only feebly basic.
Answer
NH3 is distinctly basic while BiH3 is feebly basic.Nitrogen has a small size due to which the lone pair of electrons is
concentrated in a small region. This means that the charge density per
unit volume is high. On moving down a group, the size of the central
atom increases and the charge gets distributed over a large area
decreasing the electron density. Hence, the electron donating capacity
of group 15 element hydrides decreases on moving down the group.
No comments:
Post a Comment