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Take NA as the number of Anti-bonding molecular orbitals and NB as the number of Bonding molecular orbitals. The molecule is stable when NA ____________ NB.
- a)is greater than
- b)is equal to
- c)is less than
- d)is greater than or equal to
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Take NA as the number of Anti-bonding molecular orbitals and NB as the...
The stability of a molecule can be determined by considering the number of anti-bonding (NA) and bonding (NB) molecular orbitals. In general, a molecule is considered stable when the number of bonding molecular orbitals (NB) is greater than the number of anti-bonding molecular orbitals (NA). Let's break down the explanation for this answer.
Understanding Molecular Orbitals:
- Molecular orbitals are formed by the combination of atomic orbitals when two or more atoms come close together to form a molecule.
- There are two types of molecular orbitals: bonding molecular orbitals and anti-bonding molecular orbitals.
- Bonding molecular orbitals are formed by constructive interference, where the wave functions of the atomic orbitals add up and stabilize the molecule.
- Anti-bonding molecular orbitals are formed by destructive interference, where the wave functions of the atomic orbitals cancel out and destabilize the molecule.
Effect of Bonding and Anti-bonding Molecular Orbitals:
- Bonding molecular orbitals contribute to the stability of a molecule by lowering its energy.
- Anti-bonding molecular orbitals, on the other hand, increase the energy of the molecule and make it less stable.
Relationship between NA and NB:
- The stability of a molecule depends on the balance between the number of bonding and anti-bonding molecular orbitals.
- If the number of anti-bonding molecular orbitals (NA) is greater than the number of bonding molecular orbitals (NB), the destabilizing effect of the anti-bonding orbitals outweighs the stabilizing effect of the bonding orbitals. This leads to an overall decrease in stability.
- On the other hand, if the number of bonding molecular orbitals (NB) is greater than the number of anti-bonding molecular orbitals (NA), the stabilizing effect of the bonding orbitals outweighs the destabilizing effect of the anti-bonding orbitals. This leads to an overall increase in stability.
Conclusion:
In summary, a molecule is considered stable when the number of bonding molecular orbitals (NB) is greater than the number of anti-bonding molecular orbitals (NA). This is because the stabilizing effect of the bonding orbitals outweighs the destabilizing effect of the anti-bonding orbitals, leading to an overall increase in stability.
Understanding Molecular Orbitals:
- Molecular orbitals are formed by the combination of atomic orbitals when two or more atoms come close together to form a molecule.
- There are two types of molecular orbitals: bonding molecular orbitals and anti-bonding molecular orbitals.
- Bonding molecular orbitals are formed by constructive interference, where the wave functions of the atomic orbitals add up and stabilize the molecule.
- Anti-bonding molecular orbitals are formed by destructive interference, where the wave functions of the atomic orbitals cancel out and destabilize the molecule.
Effect of Bonding and Anti-bonding Molecular Orbitals:
- Bonding molecular orbitals contribute to the stability of a molecule by lowering its energy.
- Anti-bonding molecular orbitals, on the other hand, increase the energy of the molecule and make it less stable.
Relationship between NA and NB:
- The stability of a molecule depends on the balance between the number of bonding and anti-bonding molecular orbitals.
- If the number of anti-bonding molecular orbitals (NA) is greater than the number of bonding molecular orbitals (NB), the destabilizing effect of the anti-bonding orbitals outweighs the stabilizing effect of the bonding orbitals. This leads to an overall decrease in stability.
- On the other hand, if the number of bonding molecular orbitals (NB) is greater than the number of anti-bonding molecular orbitals (NA), the stabilizing effect of the bonding orbitals outweighs the destabilizing effect of the anti-bonding orbitals. This leads to an overall increase in stability.
Conclusion:
In summary, a molecule is considered stable when the number of bonding molecular orbitals (NB) is greater than the number of anti-bonding molecular orbitals (NA). This is because the stabilizing effect of the bonding orbitals outweighs the destabilizing effect of the anti-bonding orbitals, leading to an overall increase in stability.
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Take NA as the number of Anti-bonding molecular orbitals and NB as the...
When a molecule consists both bonding molecular orbitals and anti-bonding molecular orbitals, the higher the number of bonding orbitals, the more the bonding influence and the more stable the molecule will be and vice-versa.
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Take NA as the number of Anti-bonding molecular orbitals and NB as the number of Bonding molecular orbitals. The molecule is stable when NA ____________ NB.a)is greater thanb)is equal toc)is less thand)is greater than or equal toCorrect answer is option 'C'. Can you explain this answer?
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