Question

1_ from your models of SF4, BrF3 and XeF4, deduce whether different atom arrangements,called geometrical isomers,arepossible,and,ifso,sketch them below.indicate the preferred geometry for each case and suggest a reason for your choice. indicate which structures have dipole moments,and show their direction.

MOLECULE DIPOLE MOMENT PREFERRED GEOMETRY REASON


A) SF4




B) BrF3





C) XeF4


2_because lonr pairs are larger than bonding pairs,lone pair_lone pair interactions are greater than lone pair_bonding pair interactions,which are in turn larger than bonding pair_bonding pairinteractions.using this notion,suggest how the following species would distort from regular geometries.

a) OF2


B)SCL2

C)PF3


3_calculate the formal charges of all atoms in NH3 ,NO2- and NO3- .

Answer 1