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Among the following species, Identify the isoelectronic and isostructural pair.
- a)[NF3, NO-3]
- b)[BF3, NO-3]
- c)[BF3, NF3]
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Among the following species, Identify the isoelectronic and isostructu...
Answer:
To determine the isoelectronic and isostructural pair among the given species, we need to compare their electron configurations and molecular geometries.
a) [NF3, NO-3]
The electron configuration of NF3 is: 1s2 2s2 2p6 3s2 3p3
The electron configuration of NO-3 is: 1s2 2s2 2p6 3s2 3p6
These two species have different electron configurations, so they are not isoelectronic.
b) [BF3, NO-3]
The electron configuration of BF3 is: 1s2 2s2 2p1 3s2 3p3
The electron configuration of NO-3 is: 1s2 2s2 2p6 3s2 3p6
These two species have the same number of electrons (24), so they are isoelectronic.
To determine if they are isostructural, we need to compare their molecular geometries.
BF3 has a trigonal planar molecular geometry, with the boron atom at the center and three fluorine atoms surrounding it.
NO-3 has a trigonal planar molecular geometry as well, with the nitrogen atom at the center and three oxygen atoms surrounding it.
Since BF3 and NO-3 have the same molecular geometry, they are also isostructural.
c) [BF3, NF3]
The electron configuration of BF3 is: 1s2 2s2 2p1 3s2 3p3
The electron configuration of NF3 is: 1s2 2s2 2p6 3s2 3p3
These two species have different electron configurations, so they are not isoelectronic.
Additionally, BF3 has a trigonal planar molecular geometry, while NF3 has a pyramidal molecular geometry. Therefore, they are not isostructural.
Based on the above analysis, the isoelectronic and isostructural pair among the given species is [BF3, NO-3].
To determine the isoelectronic and isostructural pair among the given species, we need to compare their electron configurations and molecular geometries.
a) [NF3, NO-3]
The electron configuration of NF3 is: 1s2 2s2 2p6 3s2 3p3
The electron configuration of NO-3 is: 1s2 2s2 2p6 3s2 3p6
These two species have different electron configurations, so they are not isoelectronic.
b) [BF3, NO-3]
The electron configuration of BF3 is: 1s2 2s2 2p1 3s2 3p3
The electron configuration of NO-3 is: 1s2 2s2 2p6 3s2 3p6
These two species have the same number of electrons (24), so they are isoelectronic.
To determine if they are isostructural, we need to compare their molecular geometries.
BF3 has a trigonal planar molecular geometry, with the boron atom at the center and three fluorine atoms surrounding it.
NO-3 has a trigonal planar molecular geometry as well, with the nitrogen atom at the center and three oxygen atoms surrounding it.
Since BF3 and NO-3 have the same molecular geometry, they are also isostructural.
c) [BF3, NF3]
The electron configuration of BF3 is: 1s2 2s2 2p1 3s2 3p3
The electron configuration of NF3 is: 1s2 2s2 2p6 3s2 3p3
These two species have different electron configurations, so they are not isoelectronic.
Additionally, BF3 has a trigonal planar molecular geometry, while NF3 has a pyramidal molecular geometry. Therefore, they are not isostructural.
Based on the above analysis, the isoelectronic and isostructural pair among the given species is [BF3, NO-3].
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Community Answer
Among the following species, Identify the isoelectronic and isostructu...
The correct option is B [BF3, NO-3]
Solution:
Isoelectronic species have same number of electrons and Isostructural species have same hybridisation at the central atom.
Steric Number (x) = 1/2(M + V − C+A).
where, M = number of monovalent surrounding atoms
V = number of valence electrons on the central atom
C = charge (with sign)
A=charge on anion
NF3
number of electron=7+9×3=34
Steric Number (x)=1/2(3+5−0+0).
Steric Number (x)=4.
Hybridisation =sp3
NO-3
number of electron=7+8×3+1=32
Steric Number (x)=1/2(0+5−0+1).
Steric Number (x)=3.
Hybridisation =sp2
BF3
number of electron=5+9×3=32
Steric Number (x)=1/2(3+3−0+0).
Steric Number (x)=3.
Hybridisation =sp2
[BF3, NO-3] are isoelectronic and isostructural pairs.
Solution:
Isoelectronic species have same number of electrons and Isostructural species have same hybridisation at the central atom.
Steric Number (x) = 1/2(M + V − C+A).
where, M = number of monovalent surrounding atoms
V = number of valence electrons on the central atom
C = charge (with sign)
A=charge on anion
NF3
number of electron=7+9×3=34
Steric Number (x)=1/2(3+5−0+0).
Steric Number (x)=4.
Hybridisation =sp3
NO-3
number of electron=7+8×3+1=32
Steric Number (x)=1/2(0+5−0+1).
Steric Number (x)=3.
Hybridisation =sp2
BF3
number of electron=5+9×3=32
Steric Number (x)=1/2(3+3−0+0).
Steric Number (x)=3.
Hybridisation =sp2
[BF3, NO-3] are isoelectronic and isostructural pairs.
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Among the following species, Identify the isoelectronic and isostructural pair.a)[NF3, NO-3]b)[BF3,NO-3]c)[BF3, NF3]d)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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