Electron pair geometry considers both bonding and lone pairs of electrons around a central atom, while molecular geometry focuses solely on the arrangement of bonded atoms. This can lead to different geometries when there are lone pairs present; for example, in ammonia (NH₃), the electron pair geometry is tetrahedral due to one lone pair, but the molecular geometry is trigonal pyramidal. The presence of lone pairs affects bond angles and the overall shape of the molecule, resulting in distinct geometries.
Trigonal Bipyramidal
the electron pair geometry would be trigonal planar because there is a lone pair on the oxygen atom. The molecular pair geometry would be bent
PH3 has 3 bonding pairs and 1 non-bonding pair of electrons. Its electron pair geometry is Tetrahedral and its molecular geometry is Trigonal Pyramidal.
The electron pair geometry for CS2 is Linear.
The molecular geometry of H3O+ is Trigonal Pyramidal because it has 3 bonding pairs and 1 nonbonding pair (lone pair)
The molecular geometry of SO2 is bent, and the electron pair geometry is trigonal planar.
I'm unsure what the electron pair geometry is but the molecular geometry is Trigonal Planar.
electron pair geometry: octahedral molecular geometry: octahedral
Trigonal Bipyramidal
the electron pair geometry would be trigonal planar because there is a lone pair on the oxygen atom. The molecular pair geometry would be bent
PH3 has 3 bonding pairs and 1 non-bonding pair of electrons. Its electron pair geometry is Tetrahedral and its molecular geometry is Trigonal Pyramidal.
Check the link, it is a sheet describing the different types of electron and molecular geometry. It helped me a lot. ^^ electron pair geometry and molecular geometry won't be the same if there are lone pairs involved.
VSEPR is valence spin electron pair repulsion, and helps in describing the electron domain geometry and the molecular geometry of a substance.
The molecular geometry of the AsO2- ion is bent (because of the lone electron pair with the central arsenic atom, making the O-As-O bond angle very obtuse) but its electron domain geometry is trigonal planar because there are three domains, with a 120 deg. angle between them.
The electron pair geometry for CS2 is Linear.
The electron pair geometry of C2H2 is linear.
The electron pair geometry for BF4- is tetrahedral. There are four regions of electron density around the boron atom, consisting of three bonding pairs and one lone pair, leading to a tetrahedral arrangement.