Question

Determine the electron geometry (eg) and molecular geometry(mg) of BCI3. 

eg = trigonal bipyramidal, mg = trigonal bipyramidal 

eg = trigonal planar, mg = trigonal planar 

eg = tetrahedral, mg = trigonal pyramidal 

eg = tetrahedral, mg = trigonal planar 

eg = trigonal planar, mg = bent

Answer 1

Electron geometry are the arrangement of electron groups and molecular geometry means the arrangement of arrangement of atoms.

Electron geometry includes the lone pair while the molecular geometry does not include the lone pair.

Here we have the , which has central atom B and 3 Cl is attached to it. and no lone pair, because B has three valence electrons which are bonded with 3 Cl.

Hence its Electron geometry is equal to molecular geometry

3 bond pairs of electron are present around B with bond angle $120^\circ$.

The molecular geometry (mg) is Trigonal planar as well as electron geometry (eg) is  Trigonal planar.

CI 1200 CI CI trigonal planar structure of BCl3

Answer 2

3 of 3 cl atom 3 Š-5 = 0 Belz Total valence electron on B number cetoms attached electrons needed for bonding number of non bonded electrons number of lone pairs :. Steric number= number of bonded electron t number of non bonded elections steric number spa Therepre, Election and neolecular geometry ce - B is trigonal planar O +3 3 hybridization -cl -Cl