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Hint: Hybridization is the notion that newly hybridized orbitals are formed from the fusion of atomic orbitals. This in turn, influences the molecular bonding and geometry properties of the compound.
Complete answer:
The energy of the hybridized orbitals are lower than the energy compared to their
separated, unhybridized counterparts. Due to this more stable compounds are formed.
The hybridization also has a greater role in determining the shape or the molecular geometry of the compound. The shapes can be: linear, angular or V or bent, tetrahedral, seesaw, square pyramidal and many more.
Hybridization is an expansion of valence bond theory.
The Hybridization of any compound can be calculated as follows:
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ V+M-C+A \right]$ ----(1)
where,
H = Number of orbitals involved in hybridization.
V = Valence electrons of the central atom.
M = Number of monovalent atoms linked to the central atom.
C = Charge of the cation.
A = Charge of the anion.
Now, let us consider the question, the reaction involved is shown below.
$Sb{ F }_{ 5 }\quad +\quad Xe{ F }_{ 4 }\quad \longrightarrow \quad { [Xe{ F }_{ 3 }] }^{ + }{ [Sb{ F }_{ 6 }] }^{ - }$
In the case of ${[Xe{F}_{3}]}^{+}$, V=8, M=3 and C=1. Substituting these values in equation (1), we get,
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ 8+5-1 \right]$
$\implies H = 5$
This shows that it has 3 bonded pairs and 2 lone pairs and has a $s{p}^{3}d$ hybridization and thus has a T-shaped structure.
In the case of ${[Sb{F}_{6}]}^{-}$, V=5, M=6 and A=1. Substituting these values in equation (1), we get,
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ 5+6+1 \right]$
$\implies H = 6$
This shows that it has 6 bonded pairs and has a $s{p}^{3}{d}^{2}$ hybridization and thus has an octahedral structure.
Note: It is due to the presence of lone pairs in ${[Xe{F}_{3}]}^{+}$ that it has a T-shaped structure and not a planar structure. It is due to the lone pair-lone pair repulsion that it has a T-shaped structure.
Complete answer:
The energy of the hybridized orbitals are lower than the energy compared to their
separated, unhybridized counterparts. Due to this more stable compounds are formed.
The hybridization also has a greater role in determining the shape or the molecular geometry of the compound. The shapes can be: linear, angular or V or bent, tetrahedral, seesaw, square pyramidal and many more.
Hybridization is an expansion of valence bond theory.
The Hybridization of any compound can be calculated as follows:
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ V+M-C+A \right]$ ----(1)
where,
H = Number of orbitals involved in hybridization.
V = Valence electrons of the central atom.
M = Number of monovalent atoms linked to the central atom.
C = Charge of the cation.
A = Charge of the anion.
Now, let us consider the question, the reaction involved is shown below.
$Sb{ F }_{ 5 }\quad +\quad Xe{ F }_{ 4 }\quad \longrightarrow \quad { [Xe{ F }_{ 3 }] }^{ + }{ [Sb{ F }_{ 6 }] }^{ - }$
In the case of ${[Xe{F}_{3}]}^{+}$, V=8, M=3 and C=1. Substituting these values in equation (1), we get,
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ 8+5-1 \right]$
$\implies H = 5$
This shows that it has 3 bonded pairs and 2 lone pairs and has a $s{p}^{3}d$ hybridization and thus has a T-shaped structure.
In the case of ${[Sb{F}_{6}]}^{-}$, V=5, M=6 and A=1. Substituting these values in equation (1), we get,
$H\quad =\quad \cfrac { 1 }{ 2 } \left[ 5+6+1 \right]$
$\implies H = 6$
This shows that it has 6 bonded pairs and has a $s{p}^{3}{d}^{2}$ hybridization and thus has an octahedral structure.
Note: It is due to the presence of lone pairs in ${[Xe{F}_{3}]}^{+}$ that it has a T-shaped structure and not a planar structure. It is due to the lone pair-lone pair repulsion that it has a T-shaped structure.
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