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Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.
Q. Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B2 is
- a)1 and diamagnetic
- b)0 and diamagnetic
- c)1 and paramagnetic
- d)0 and paramagnetic
Correct answer is option 'A'. Can you explain this answer?
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Direction (Q. Nos. 1-11) This section contains 11 multiple choice ques...
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Direction (Q. Nos. 1-11) This section contains 11 multiple choice ques...
Explanation:
The bond order of a diatomic molecule is defined as half of the difference between the number of bonding electrons and the number of anti-bonding electrons.
Bond order formula:
Bond Order = (Number of bonding electrons - Number of anti-bonding electrons) / 2
According to Hund's rule, when filling molecular orbitals with electrons, each orbital is singly occupied with parallel spins before any orbital is doubly occupied.
In the case of B2 molecule, the atomic number of boron is 5. When two boron atoms combine to form a diatomic molecule, they each contribute one electron to the molecular orbitals.
Formation of molecular orbitals in B2:
The molecular orbitals formed by the combination of atomic orbitals are as follows:
- σ1s (bonding)
- σ1s* (anti-bonding)
- σ2s (bonding)
- σ2s* (anti-bonding)
- π2p (bonding)
- π2p* (anti-bonding)
Electron configuration:
According to Hund's rule, the two electrons from each boron atom will occupy the σ1s molecular orbital with parallel spins, resulting in two bonding electrons.
Bond order calculation:
Bond Order = (Number of bonding electrons - Number of anti-bonding electrons) / 2
= (2 - 0) / 2
= 1
Magnetic nature:
Diamagnetic substances have all their electrons paired up and exhibit no net magnetic moment. Paramagnetic substances have unpaired electrons and exhibit a net magnetic moment.
Since the bond order of B2 is 1, indicating the presence of two bonding electrons, it is a stable molecule. Additionally, all the electrons in B2 are paired up, resulting in no unpaired electrons. Therefore, B2 is diamagnetic.
Conclusion:
The bond order of the diatomic molecule B2 is 1, and its magnetic nature is diamagnetic.
The bond order of a diatomic molecule is defined as half of the difference between the number of bonding electrons and the number of anti-bonding electrons.
Bond order formula:
Bond Order = (Number of bonding electrons - Number of anti-bonding electrons) / 2
According to Hund's rule, when filling molecular orbitals with electrons, each orbital is singly occupied with parallel spins before any orbital is doubly occupied.
In the case of B2 molecule, the atomic number of boron is 5. When two boron atoms combine to form a diatomic molecule, they each contribute one electron to the molecular orbitals.
Formation of molecular orbitals in B2:
The molecular orbitals formed by the combination of atomic orbitals are as follows:
- σ1s (bonding)
- σ1s* (anti-bonding)
- σ2s (bonding)
- σ2s* (anti-bonding)
- π2p (bonding)
- π2p* (anti-bonding)
Electron configuration:
According to Hund's rule, the two electrons from each boron atom will occupy the σ1s molecular orbital with parallel spins, resulting in two bonding electrons.
Bond order calculation:
Bond Order = (Number of bonding electrons - Number of anti-bonding electrons) / 2
= (2 - 0) / 2
= 1
Magnetic nature:
Diamagnetic substances have all their electrons paired up and exhibit no net magnetic moment. Paramagnetic substances have unpaired electrons and exhibit a net magnetic moment.
Since the bond order of B2 is 1, indicating the presence of two bonding electrons, it is a stable molecule. Additionally, all the electrons in B2 are paired up, resulting in no unpaired electrons. Therefore, B2 is diamagnetic.
Conclusion:
The bond order of the diatomic molecule B2 is 1, and its magnetic nature is diamagnetic.
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Direction (Q. Nos. 1-11) This section contains 11 multiple choice ques...
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Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer?
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Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer?.
Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 1-11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. Assuming that Hunds rule is violated, the bond order and magnetic nature of the diatomic molecule B2isa)1 and diamagneticb)0 and diamagneticc)1 and paramagneticd)0 and paramagneticCorrect answer is option 'A'. Can you explain this answer?.
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