
Concept explainers
Interpretation:
The molecular geometry of
Concept introduction:
- Electron domain is the term used to indicate lone pair and bond pair of electrons.
- Lewis structures is also known as Lewis dot structures which represents the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
- In VSEPR, the geometry of the molecule is explained based on minimizing electrostatic repulsion between the molecules’ valence electrons around a central atom
- Electro-domain geometry includes both bond pairs and lone pairs of central atom for determining the geometry of molecule.
- Molecular geometry includes only the bond pairs of central atom for determining the geometry of the molecule.
Correct answer:
Trigonal pyramidal

Explanation of Solution
Reason for correct option
To determine: the electron-domain geometry and molecular geometry of
Trigonal pyramidal
In
Three bromine atoms are bonded to phosphorus atom. So phosphorus is the central atom in this molecule.
A Lewis structure represents the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
Therefore,
The Lewis structure of
According to VSEPR theory, the geometry of the molecule is explained based on minimizing electrostatic repulsion between the molecules’ valence electrons around a central atom
The Lewis structure of
Electro-domain geometry includes both bond pairs and lone pairs of central atom for determining the geometry of molecule.
Therefore,
The electron-domain geometry of
Molecular geometry includes only the bond pairs of central atom for determining the geometry of the molecule.
Therefore,
The molecular geometry of
Hence the correct option for molecular geometry of
Reasons for incorrect options:
Writes all the molecular geometry of
(a) Trigonal planar
(b) Tetrahedral
(d) Bent
(e) T-shaped
The molecular geometry of
So, this molecular geometry of
Hence the incorrect options are a, b, d and e.
Conclusion
The correct optionfor molecular geometry of
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