JEE Main 20265 AprilMorning Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 5 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Coordination Compounds
JEE Main 2026 · 5 April · Morning Shift · Chemistry · Coordination Compounds
The correct statements about metal carbonyls are A. The...
The correct statements about metal carbonyls are
A. The metal-carbon bonds in metal carbonyls possess both and -character.
B. Due to synergic bonding interactions between metal and CO ligand, the metal-carbon bond becomes weak.
C. The metal-carbon bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of metal.
D. The metal-carbon bond is formed by the donation of electrons from filled d-orbital of metal into vacant orbital of CO.
Choose the correct answer from the options given below:
A. The metal-carbon bonds in metal carbonyls possess both and -character.
B. Due to synergic bonding interactions between metal and CO ligand, the metal-carbon bond becomes weak.
C. The metal-carbon bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of metal.
D. The metal-carbon bond is formed by the donation of electrons from filled d-orbital of metal into vacant orbital of CO.
Choose the correct answer from the options given below:
Options
- AA and B Only
- BA, C and D Only
- CB and C Only
- DA and D Only
Correct answer
B. A, C and D Only
Step-by-step solution
Statement A is correct. The metal-carbon bond in metal carbonyls possesses both and character due to synergic bonding.
Statement B is incorrect. The synergic bonding interaction between the metal and the CO ligand strengthens the metal-carbon bond.
Statement C is correct. The metal-carbon bond is formed by the donation of a lone pair of electrons from the carbonyl carbon into a vacant orbital of the metal.
Statement D is correct. The metal-carbon bond is formed by the back-donation of electrons from a filled d-orbital of the metal into the vacant antibonding orbital of the CO ligand.
Therefore, statements A, C, and D are correct.
Answer: A, C and D Only
Statement B is incorrect. The synergic bonding interaction between the metal and the CO ligand strengthens the metal-carbon bond.
Statement C is correct. The metal-carbon bond is formed by the donation of a lone pair of electrons from the carbonyl carbon into a vacant orbital of the metal.
Statement D is correct. The metal-carbon bond is formed by the back-donation of electrons from a filled d-orbital of the metal into the vacant antibonding orbital of the CO ligand.
Therefore, statements A, C, and D are correct.
Answer: A, C and D Only