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Valence shell Electron Pair Repulsion (VSEPR) Theory
oIn Valance shell Electron Pair Repulsion (VSPER) theory, the electrons the surround the central atom that molecule room arranged in together a way that they minimization the electron-electron repulsions.
oThis setup of electrons deserve to be supplied to predict the geometrical form of polyatomic molecule by calculating the bond pair and also lone pair the electrons neighboring the central atom/ions.
The molecular shape of various molecules having specific variety of lone pair the electrons and also bonding pair of electron are provided below:
Number the bonding groups on main atom | Number of lone pairs on main atom | Molecular notation | Electron-pair geometry | Molecular geometry |
2 | 0 | linear | Linear | |
3 | 0 | trigonal planar | trigonal planar | |
2 | 1 | trigonal planar | bent | |
4 | 0 | tetrahedral | tetrahedral | |
5 | 0 | trigonal bipyramidal | trigonal bipyramidal | |
3 | 2 | trigonal bipyramidal | T-shape | |
4 | 1 | trigonal bipyramidal | seesaw | |
4 | 2 | octahedral | square planar |
The geometrical form of molecules which can be identified by calculating the number of bond pair and lone pair of electrons and also steps connected in the calculation is provided below:
Step.1: write the electron period formula from the offered molecular formula.
Step.2: identify the total variety of bonding pair electrons and lone pair that electrons the present approximately the main atom.
Step.3: recognize the plan of these electron pairs around the central atom to uncover the electron geometry.
(b)
The electron dot structure of
is given below:The total variety of bond pair of electron = 2.
The total number of lone pair of electrons = 2.
Therefore, the electron geometry the molecule is “tetrahedral.”
(c)
The electron dot structure of
is given below:The total number of bond pair of electron = 3.
The total variety of lone pair of electrons = 2.
Therefore, the electron geometry that molecule is “trigonal bipyramidal.”
(d)
The electron dot framework of
is provided below:The total variety of bond pair of electron = 3.
The total number of lone pair of electron = 0.
Therefore, the electron geometry that molecule is “trigonal planar.”
Ans: part bThe electron geometry the
is offered below: Part cThe electron geometry of
is given below: Part dThe electron geometry the
is provided below:00
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