Question
The geometry with respect to the central atom
of the following molecules are
N(SiH3)3 , Me3N, (SiH3)3 P
(1) planar, pyramidal, planar
(2) planar, pyramidal, pyramidal
(3) pyramidal, pyramidal, pyramidal
(4) pyramidal, planar, pyramidal
(why back bonding is absent in (sih3)3p)