JEE Exam > JEE Questions > Among the following metal carbonyls, the C --...
Start Learning for Free
Among the following metal carbonyls, the C --- O bond order is lowest in :
a) [ Mn(CO)6]+
b) [ V(CO)6 ]-
c) [ Cr(CO)6]
d) [ Fe(CO)5]
Correct answer is option 'D'. Can you explain this answer?
a) [ Mn(CO)6]+
b) [ V(CO)6 ]-
c) [ Cr(CO)6]
d) [ Fe(CO)5]
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Among the following metal carbonyls, the C ---O bond order is lowest i...
"Correct option would be b)
Metallic carbonyls involves both sigma and pi-bonding. pi-bonding involves the back donation of metal d-electrons into vacant orbital of CO. Larger the electrons involve in back-bonding, lesser will be the bond order.
CO is strong field ligand. The electronic configuration of metal ion in presence of CO will be as follows:
a) Mn+ = 3d5, 4s1 = 3d6 (in presence of CO)
b)Fe0 = 3d6, 4s2 = 3d8 (in presence of CO)
c) Cr0 = 3d5, 4s1 = 3d6 (in presence of CO)
d) V- = 3d4, 4s2 = 3d6 (in presence of CO)
In Fe(CO)5, 4 lone pairs of electrons are available on metals for back donation hence lowest will be bond order."
Community Answer
Among the following metal carbonyls, the C ---O bond order is lowest i...
Explanation:
Metal carbonyls are compounds in which carbon monoxide (CO) acts as a ligand to a metal center. The carbon monoxide molecule forms a coordinate covalent bond with the metal atom, where the carbon atom donates a lone pair of electrons to the metal atom.
In metal carbonyls, the C---O bond order is a measure of the strength of the bond between carbon and oxygen. The bond order is related to the number of shared electron pairs between the carbon and oxygen atoms. A higher bond order indicates a stronger bond.
Comparison of Metal Carbonyls:
a) [Mn(CO)6]:
- The central metal atom is Mn, which has a d5 electronic configuration.
- The oxidation state of Mn is +1.
- The complex has 6 CO ligands.
- The Mn atom can accept 5 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 3, indicating a triple bond between carbon and oxygen.
b) [V(CO)6]-:
- The central metal atom is V, which has a d3 electronic configuration.
- The oxidation state of V is -1.
- The complex has 6 CO ligands.
- The V atom can accept 2 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 2, indicating a double bond between carbon and oxygen.
c) [Cr(CO)6]:
- The central metal atom is Cr, which has a d6 electronic configuration.
- The oxidation state of Cr is 0.
- The complex has 6 CO ligands.
- The Cr atom can accept 4 electrons from the CO ligands, leaving two unpaired electrons in the d orbitals.
- The C---O bond order is 3, indicating a triple bond between carbon and oxygen.
d) [Fe(CO)5]:
- The central metal atom is Fe, which has a d6 electronic configuration.
- The oxidation state of Fe is 0.
- The complex has 5 CO ligands.
- The Fe atom can accept 5 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 2, indicating a double bond between carbon and oxygen.
Conclusion:
Among the given metal carbonyls, the C---O bond order is lowest in [Fe(CO)5]. This is because the Fe atom in [Fe(CO)5] can accept 5 electrons from the CO ligands, resulting in a double bond between carbon and oxygen. In contrast, the other metal carbonyls have a higher C---O bond order, indicating a triple bond between carbon and oxygen.
Metal carbonyls are compounds in which carbon monoxide (CO) acts as a ligand to a metal center. The carbon monoxide molecule forms a coordinate covalent bond with the metal atom, where the carbon atom donates a lone pair of electrons to the metal atom.
In metal carbonyls, the C---O bond order is a measure of the strength of the bond between carbon and oxygen. The bond order is related to the number of shared electron pairs between the carbon and oxygen atoms. A higher bond order indicates a stronger bond.
Comparison of Metal Carbonyls:
a) [Mn(CO)6]:
- The central metal atom is Mn, which has a d5 electronic configuration.
- The oxidation state of Mn is +1.
- The complex has 6 CO ligands.
- The Mn atom can accept 5 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 3, indicating a triple bond between carbon and oxygen.
b) [V(CO)6]-:
- The central metal atom is V, which has a d3 electronic configuration.
- The oxidation state of V is -1.
- The complex has 6 CO ligands.
- The V atom can accept 2 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 2, indicating a double bond between carbon and oxygen.
c) [Cr(CO)6]:
- The central metal atom is Cr, which has a d6 electronic configuration.
- The oxidation state of Cr is 0.
- The complex has 6 CO ligands.
- The Cr atom can accept 4 electrons from the CO ligands, leaving two unpaired electrons in the d orbitals.
- The C---O bond order is 3, indicating a triple bond between carbon and oxygen.
d) [Fe(CO)5]:
- The central metal atom is Fe, which has a d6 electronic configuration.
- The oxidation state of Fe is 0.
- The complex has 5 CO ligands.
- The Fe atom can accept 5 electrons from the CO ligands, leaving one unpaired electron in the d orbital.
- The C---O bond order is 2, indicating a double bond between carbon and oxygen.
Conclusion:
Among the given metal carbonyls, the C---O bond order is lowest in [Fe(CO)5]. This is because the Fe atom in [Fe(CO)5] can accept 5 electrons from the CO ligands, resulting in a double bond between carbon and oxygen. In contrast, the other metal carbonyls have a higher C---O bond order, indicating a triple bond between carbon and oxygen.
|
Explore Courses for JEE exam
|
|
Similar JEE Doubts
Top Courses for JEEView all
Question Description
Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer?.
Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer?.
Solutions for Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Among the following metal carbonyls, the C ---O bond order is lowest in :a) [ Mn(CO)6]+b) [ V(CO)6]- c) [ Cr(CO)6]d) [ Fe(CO)5]Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Signup to solve all Doubts
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup